I'm screwed .

I had sex with my boyfriend unprotectedly on my ovulation day by accident . I didn't even know it was my ovulation day until I clicked on good ole eve and she told me. some one please tell me I'm not screwed . !! UPDATE: No I didn't take plan b because a couple days after I started having cramps. A week after this situation My boobs started hurting like crazy. Like horribly. Boobs never hurt this bad . also my back started hurting like crazy . I woke up a couple days this week nauseated. it's probably nothing but I'm still concerned .