I'm 16 (please don't make this a debate on early sex), and I have had RSD for 4 or 5 years. I had two forms of birth control fail, and for a long time I thought I was pregnant. Until I got terrible irregular cramps, that actually caused me to take time off from my job. I also had serious bleeding, even more than normal, and I had already had a heavy flow. I am not a 100% sure I was pregnant... but I would like to know if anyone has ever heard anything about RSD causing miscarriages. Thank You!