Thursday, June 26, 2014

SCUBA diving, menstruation and DCS

Emptying a Diva Cup menstrual cup

The photo: The Diva Cup comes in two sizes. Size 1 cup is 1 11/16" (4.3 cm) in diameter and the Size 2 cup is 1 13/16" (4.6 cm) in diameter. Both cups are approximately 2 1/4" (5.7 cm) in length in the body of the cup, with another 3/8" (1 cm) stem (2 5/8" total length). Until I bought my new Diva, just before we came to Scotland for the Solstice I was wearing a size one and it worked well. However, even I have to give in to age after a while so I decided on a size 2 as I’m now 43, but my vaginal muscles are far stronger than most twenty-something ballerinas known for their amazingly tight grips.

The Diva Cup should be emptied, washed and reinserted at least twice in 24 hours and can be worn overnight without concern of leaking and it can be safely boiled if necessary to clean it. Even on heavy days I can wear it for 12 hours w/o it needing to be emptied. DivaCup holds an ounce of menstrual flow (30 ml) and as the average woman only flows about 1 to 2 ounces (30-60 ml) per cycle so most of us can go longer than 12 hours w/o emptying if necessary.

Willow’s Royal Ballet friends and menstrual dive-sex: Since the Royal Ballet is off for a few weeks Willow asked four of her more sexually adventurous girlfriends from the corps and their boyfriends to come up to the Abbey for a few days of fun and relaxation and they arrived on the overnight train in Himself’s private car that had taken Jacks guests back to their jobs in London. The girls were so amazed at the luxury, blown away really since they got to have menstrual sex all the way from Euston to Inverness and despite a large supply of thick dark red towels provided for just that eventuality managed to get His Grace’s 1,000 thread count sheets bloody. All the girls are completely waxed with the exception of scalp hair and eyebrows which makes cleaning up after menstrual sex much easier.

Three of the four have GyneFix copper IUDs implanted and are menstrual while the fourth is on combined oral contraceptives (COCs) and started a new pack w/o having withdrawal bleed (her pill period) so she can dive period free during her time at the Abbey. The GyneFix girls are wearing menstrual cups.  All were fitted with latex Reflexions FS diaphragms for flood insurance to use while having dive-sex. It’s fairly unusual for ballet dancers to have copper IUDs placed because most enjoy being period free. However, some like Willow’s friends, find they are at a secondary libidinal peak while bleeding and are far moiré creative when fertile so they feel the inconvenience of dealing with flow control is worth it to be able to enjoy the cycling of their natural hormones.

Menstruation, hormonal contraceptives and DCS: There is a correlation between increased instances of DCS and the first week of a woman’s cycle when she is menstrual especially if the woman is on strenuous long or deep dives. Less frequent or shorter less strenuous dives during her period reduce the chances of DCS significantly. There is no indication that using hormonal contraceptives increases a woman’s risk of a DCS incident.   I’m CD26 and luteal and shouldn’t start my period until this coming Friday when I expect Bea, Willow and the Swan Twins will begin to bleed as well since they are in menstrual synchrony with me.

Of course while diving menstrual flow usually stops because diving is very dehydrating since the pressure forces water out of body tissues and fills the bladder, which is why even when you empty your bladder before diving after you have been down for a while you need to urinate again. However, after surfacing menstrual flow begins again and then some of us will gush filling our menstrual protection (tampons) occasionally to over flowing which is why a menstrual cup or a diaphragm works so well as they can withstand the gush that may occur shortly after surfacing. .

EAN32: However, because Willow’s friends are bleeding and menstrual dive-sex will be strenuous for them we are all diving enriched air Nitrox (EAN) with 32% oxygen rather than the 21% oxygen in regular air to reduce the possibility of DCS incidents. In order to do that our Divemaster had to clean our regs and OTS Guardian FFMs to ensure they were safe for use with EAN32 as there is an increased risk of fire when using improperly cleaned masks and regs with high oxygen content gases. Our 80 cu ft tanks are filled from a large cylinder delivered from a dive specialty shop in Aberdeen that services the divers working in the North Sea oil fields.

Menstrual dive-sex and cramps: Almost all women who have tried having sex underwater while menstrual have reported feeling totally free of menstrual cramps after an underwater orgasm. It’s common knowledge that an orgasm during conventional (surface) sex has cramps relieving powers, but as underwater sex is thought to be kinky very little to no research has been done under dive conditions so we are left with our own and friends experiences which for the most part have been very positive as far as relieving menstrual cramps is concerned. I’m sure it’s the endorphins released during sex, especially orgasm that relax the muscles in the uterus.

Underwater: Before diving we all emptied our bowels and bladders and our partners (chosen by coin flips among all nine of us girls) got to watch as we each inserted our latex flat spring diaphragms and then had the lucky guy insert two fingers and feel the cervix under the stretchy rubber membrane. then we let him insert a 10ml disposable applicator of silicone based DiveGel+ - which is a lubricant and biocide - and depress the plunger to add waterproof lube for the moving parts. Then we entered the water. The guys loved ‘helping’ and it was a fun way to get them invested in our safety.

Diving the cistern for dive-sex each girl has one leg tethered to an ankle leash connected to an iron ring on the cistern floor and there is a ring set into the floor in the center of each bay. After being tethered her buoyancy comp is inflated to keep her more or less stable while her partner moves between her spread legs and after pushing aside her bikini thong caresses her clitoral shaft to give her her first underwater orgasm as she sucks gas her bubbles rush to the surface and she quivers, moans, mews and gasps in her mask. Then he pushes inside her and grasps her buns to hold himself as deep in her as possible as he begins a series of thrusts caressing her G-spot before her muscular orgiastic contractions tip her over the edge into ecstasy taking him shuddering and gasping with her filling her with hundreds of millions of sperm as his body tries again for immortality.



  1. Do you know where I can get the GyneFix in the USA? I live in Las Vegas.

    1. Hi Bronwyn, welcome to my world.

      My clinic is participating in a clinical trial which is how my circle got their GyneFix IUDs. The trial has been underway for some time now and no more participants are being accepted. At one time a clinic in the Bay area of California was offering them. I don’t know of anywhere in the U.S. where GyneFix is being offered currently. I think GyneFix is available in Mexico.

    2. Thanks. I know that the Willow Clinic in Vancouver BC still offers it. I was praying there was a clinic somewhere closer offering it.

  2. Can you order them online from Canada or Europe?

    1. I assume we are still talking about GyneFix IUDs. If that's the case I don't know... You'd have to ask the supplier, but you would still need someone familiar with their implantation - which is unlike any other IUD I'm familiar with - to place it correctly. If you want a GyneFix I think it would be far safer to get it from a medical practitioner who is familiar with and very experienced in their implantation, even if that involves you traveling.


Blog Archive

Lijit Search



About Me

My photo
Powys , Wales, United Kingdom
I'm a classically trained dancer and SAB grad. A Dance Captain and go-to girl overseeing high-roller entertainment for a major casino/resort