I need help!!

Brooklyn

I’m 16 and had unprotected sex with this guy. We didn’t use a condom and I’m not on birth control (I know stupid right?) well it’s 2 days after and I have been nauseous all day with hot flashes, my breasts are tender, I get cramps, my back is killing me, I can’t stop peeing and I’m am so exhausted from doing nothing. Someone please help me.