With our first I had to wait over 12 weeks to make sure I didn't develope antibodies. I am RH- and my husband is RH+. My doctor didn't bother checking until a week into bleeding. My Rhogam shot had to get out of my system. We started trying after we were cleared and got pregnant in the next month or two. Not exactly sure because our second loss was between 8-12 weeks in my right ovary. The baby didn't form correctly and had no heartbeat. We were told to wait 2 cycles. It took 3 cycles and tracking with opk's to get pregnant with our 1st son. Our third miscarriage was different. Took 4 full months including 2 d&c's and w seperate rounds of Cytotec to cleae everything. We found put we were pregnant with our third son less than 1 month after the final mass passed.