Help, I’m freaking out!

So about last month I had protected sex. I was supposed to get my period 5 days ago.. i have always been irregular but still. I don’t feel nauseous or anything. Just felt a little bit of cramps and my face is breaking out. I have also been a bit stressed lately because of my exams. I am freaking out because I really don’t want to be pregnant. I have also been feeling pretty wet down there the past two days and I keep thinking that i got my period but sadly not. Any advice?