I've been reading this community for a bit and I'd like to thank you for all the helpful info. I didn't think I'd be able to use a cup, but now I'm going to give it a try. I have a tilted uterus, and a flat pelvic arch, so my doctor told me I could never wear a diaphragm, which I assumed meant I couldn't use a cup either (which made sense to me, since tampons always migrate out of me after a couple of hours). Sadness! However from reading back posts here it looks like the cup stays in place through suction, and not resting on the pubic bone like diaphragms/Instead cups. So I'll give it a whirl.
Anyone with similar problems have a brand to recommend? Cheaper=good.
Also, I don't plan on wearing my cup full time, only for swimming and sports. I'm pretty active. The "physical activities" tag doesn't seem to be working...anyone have any feedback about how cups hold up to strenuous exercise?