My peroids have always been normal. I'm 17 years old and I had sex for the first time in 2 years, we used condoms and he didn't ***. The night before he came on the outside of my anus. This happened 3 weeks ago. Now I'm 2 weeks late for my period. I've also switched to a vegan diet this last month and I've been under a ton of stress. I took a test when I was 12 days past due and it said negative. Is there a strong possibility that I'm pregnant? Is it too late to get an abortion? I'm afraid of getting a bunch of negative tests and then keep missing my periods, and turning out to be pregnant too far along for an abortion.