Worried

I was supposed to started Oct 27, I didn't and had a white discharge than. 0ct 31 my boyfriend and I had sex since I wasn't on my period, we used a condoms but I went to the bathroom after it well it smell like his cum. Monday I thought I started but it was so light and wasn't heavy like usually cramps was worse than ever. It didn't last long at all. Since than I been really tired, Headaches, craving weird things, going to the bathroom a lot, my boobs are big and tender, odd sensation in my tummy. My tummy is hard and oval shape like when your pregnant. I feel like I am but I'm scared because I'll be consider a high risk if I am.