I need help

So I had sex with my boyfriend and yes we used protection....

But I'm freaking out that I'm pregnant

I'm not in a place in my life where I am ready to be a mom.

I am supposed to start by the end of the week but I feel off if that makes sense. I've been looking up things and I can agree with some of them. I might be psyching myself out. I've had a lot of stress put on me lately to and I haven't really been drinking water because it makes me feel like I'm going to vomit.

I'm really scared right now and I don't have anybody to go to.