Bleeding after sex... Please help (TMI!)

Kat
AF kept pushing my period back When I didn't get it: was supposed to be 3/31, moved to 4/7, moved to today, then moved to 4/16. So anyways, SO and I BD'd tonight, and after I was spotting. I'm PRAYING it's not AF (usually she comes morning/early afternoon). Checked my CP and it's very high (can barely feel it), medium, and closed... Does anyone think this could be implantation? Or can your cervix be sensitive in early pregnancy? I know no one really knows, and I should take a test but the last one I took (3 days ago) was still BFN. Uuuugh someone please give me advice, I'm trying to not get upset over nothing 😕