hi, i was wondering if i am pregnant because i am just 17 and did not have sex with my boyfriend although i fear that his semen might have entered into my vagina when i pleased him. more so, on the 3rd day i took the evonelle pill which was nearly close to the 72nd hour. i feel like my breast are getting bigger, my body is weak and my period is not yet due but it should be in 5 days time. i fear that i am pregnant..am i?? thanks..