Hi, i have a well grounded education in biology and chemistry, but it seems in the feild of tyhe womens response to hormones i am lacking. My girlfreind recieved the
Depo Provera shot, a few days before she was expecting her period, she never got it, and it is now 3 weeks past, i can see how this may be normal, im not sure the exact role of progesterone. The reason i worry is one of pregnancy, allthough i cannot fashion it to be a possibility, anything is supposedly possibly.