Do you think I missed my chance? :(

So I've been using opks and yesterday morning got a very definite positive. The test line was darker than the control line. We didn't get around till BDing till this morning and I noticed when we were (sorry if this is tmi) it felt like he was hitting my cervix. So now I'm wondering if I ovulated and missed it since it felt like my cervix must have been low. I took another opk just now and the control line and test line are the same darkness. I'm so upset I may have missed it this month! :( The last day we BD'd before today was three days before I got my positive so I'm thinking it would be a slim chance for that one to have been successful. What do y'all think?