Period out of wack


Okay sooo last month I started my period on the 12th, according to this app, I’m 3 days late. I’ve been having light cramps and been feeling kinda like I’m discharging or whatever, like it feels like I’ve started my period but there is literally nothing there. I’ve had this feeling for like the past 3 days. I took my paranoia to google and girls had said they did this before they found out they were pregnant. I have had unprotected sex and we used the pull out method. Is this normal tho? Does what I said make sense? I need opinions 😩