I recommend the Caya as THE BEST birth control available today (it's also been marketed under the SILCS brand). When used correctly with spermicidal jelly and positioned to cover the cervix, it's 99% safe. (the 1% is when we forget to put it in). The video that's available makes the positioning very clear:
Finally we can protect ourselves from unwanted pregnancies without hormones or intrusive IUD’s or the latest weird system of altering ovulation with yet another hormone as we become experimental lab rats. I'm also happy to say the reusable diaphragm will take a big chunk of profits out of overpriced products produced by big pharmaceutical companies around the world. The Caya means a woman can avoid the cost of seeing a health care professional to get fitted for her diaphragm.
Back in the seventies in one of my Bodysex workshops, I told the story of how my lover could feel the rim of my diaphragm during vaginal penetration. My local druggist Joe and I had become friendly because I was always buying pain pills for the extensive dentistry I was going through back then. This one time I complained about the cost of seeing my Gynecologist to get refitted for a new diaphragm. The one he gave me was too big. Joe offered to sell me a smaller one without a prescription. Yes! This would save me $25 for an office visit plus wasting my time. The number 70 diaphragm was exchanged for a 65 which was a perfect fit.
This started the group discussing the problems they were having with husbands and lovers also complaining about feeling the diaphragm rim during intercourse. When I said it was probably because when it came to vaginas, most men believed bigger was better. We all laughed but then became thoughtful. One woman asked if we could bring in our diaphragms and compare them. The best ideas always came from women in the group so I said yes.
My cute little #65 was a contrast to one woman’s #80 that looked like a saucer without a cup. The same was true for #75 that was also huge. Joe gave me diaphragms from size #60 to #75 so we could try them on during a workshop. In the seventies America had yet to become germ-phobic. We simply washed each diaphragm with soap and water in between self-fittings by each woman. Today every thing oral or genital must take place behind latex. Because Joe loved hearing about my workshops, I was able to buy the smaller sizes women preferred. Out of nine women, five of us felt better using a size below what the doctor had prescribed. We were our own doctors in keeping with the women’s self-help movement that was gaining momentum in feminist circles at the time. I’m happy to announce that today we can celebrate some good news: the Caya diaphragm’s one size will fit all. Brilliant!