Had sex for the first time with this guy (our relationship is probably best described as “it’s complicated”) and we used a condom before full penetration but he occasionally puts his tip in (but no precum) during other times. I’m not on birth control, and my period is normally irregular and cycles are very short (around 17/18 days), and this time I’m going on 3 days past 17. Should I be worried?? I’ve been experiencing cramps that feel like they could be PMS but a bit lower down than normal. I’m trying to stay calm because I know stressing might just be making it worse, but I’ve never gone through this before and don’t know who to ask/tell. Any advice appreciated.