So I made the worst choice ever and started having sex without protection we stopped about halfway through. I was on day 2 of my period and had a tampon on ( I know disgusting). I took plan b about ten hours later. My tampon got stuck so my period stopped the day after having sex (while thw tampon was up there and when I took the plan b). The morning after I had some bleeding that was a little heavy in the morning but lightened up throughout the day. I've read all of the stuff about precum and etc and how tampons don't stop anything and I know it was a super stupid thing to do. My cycle is very irregular so how will I know if I got pregnant and what are the odds that I'm looking at?