So yesterday I took an Opk and got a positive at 5:20pm. my husband and I did have intercourse that night but he did not cum in me he was feeling a little scared and pressure from trying to conceive. This morning I took one at 11:00 and the test line was a little fainter than the control line. I read that after a positive opk you usually ovulate 12-36hours after that. My husband and I were gonna try again this evening when he gets home. Is it too late though?? Also we had sex 4 days ago so I know there is a small chance I could get pregnant from that as well. But I'm just curious if tonight is too late or if we should go for it.