I'm scared...

So me and my boyfriend had sex about 2 and half weeks ago. He used a condom like always, but Ive been cramping for a week now, and I went to the restroom and I peed and stuff but when I wiped blood was on the paper? It wasn't in the pee like it was gewy and light pink-ish. I've had headaches, cramps, nausea, when I eat I only eat a little and then I feel disgusted. I'm a dancer and when I dance I start cramping super bad. I'm also in my ovulation period. I don't know if that has anything to do with it but I just really need answers... I'm super scared. I'm only 17.