I’m so scared

Guys what are symptoms of pregnancy? I’ve been getting weird cramps that I never have felt before. I feel nauseous a lot and I’m getting migraines. A lot of times I feel really hot. And I don’t have my period until seven days it says, but I’ve been feeling I like I am on my period since the last time I had sex. I had cramps after too. I think I might have a bladder infection because I have to keep peeing. I am going off to college in 8 days, so maybe I’m just stressed?