Am I pregnant?!?!?

Alysia • I`m just a simple girl
So I had unprotected sex a couple days after my ovulation ended. Then I got pms like symptoms after having sex (no condom) , it was my BF and I first time and I noticed he had a lot of pre cum. I'm very young and I'm scared shitless. 3/4 days (today) I got my "period" it was very light, almost a pink and not enough for a liner. And now later it stopped and it's a dark brown. Am I pregnant?!?!? Help :( I have light cramping