The first time i tried clomid, i took it on day 3 to 7. We had sex every day from days 10 to 18 (i think till 18) and i got pregnant. So i guess it depends on what your doctor says. I had a miscarrige at 6.5 weeks. So now i'm taking my second round of clomid, just finished it 3 days ago so now we are starting the baby dance all over again. lol