Hello, day before yesterday i took unprotected sex , and from yesterday i am not feeling well , i have headache and little pain in stomach. I am worried may be i will get pregnant . Can i take pill from today so that i cann't get pregnant?

Neha

Hello, day before yesterday i took unprotected sex , and from yesterday i am not feeling well , i have headache and little pain in stomach. I am worried may be i will get pregnant . Can i take pill from today so that i cann't get pregnant?