so me and my boyfriend had sex and we used a condom. however i think the condom may have broken or wasnt on right because i noticed semen outside the condom when he was removing it. i didnt make him pull out or anything. the next day my breast were really sore and i was tired all day. i didnt think anything about it because mt breast get sore the day before i start my period and i figures i was just tired from the long sex session the day before. but i didnt start my period the next day. i ALWAYS start the day after my breast get sore. but i still didnt think into it much. but the next day i was hungry like ALL day! this is third day after having sex. see im never hungry. seriously. i have wierd eating pattern. me being hungry all day is abnormal! well that made my boyfriend worry. i told him not to worry about it because its only been 3 days so i couldnt be showing signs even if i was pregnant. well then i woke up this moring and felt fine until i actually got out of bed. the second my feet hit the floor i got really sick. i felt horrible. really thought i was gonna throw up. but 2 hours later i felt fine. like nothing ever happened. now im getting worried too. its only been 4 days since i had sex. is it possible i could be showing signs of pregnancy?