I had sex like 4 days before my period, he pulled out which I know isn’t always reliable so please don’t go there, but I got my period a few days later and then it ran really short like 2-3 days instead of my usually 5-6 should I worry? I know sex can change your periods but that short doesn’t seem normal ? Please advise me, I also had really bad cramps during my period which is really abnormal for me since I almost always don’t have any