Im very young, not going to tell my age. but .. So, me and my boyfriend had sex about 3 weeks up to a month ago. We used a condom, & im almost positive it didn't break. But, lately, my breasts have been hurting real bad. Almost like their bruised or something, maybe for a week or 2 now. I haven't gotten my period & i was supposed to like 2 weeks ago. Ive been urinating a lot more,especially in the middle of the night. I think my eating has been the same. But im tired more. headaches more often.Kind of naishous more. I don't know whether to take a pregnancy test? or? is it puberty? ugh i dont know ! could it be something else? I REALLY need help & i'd appreciate any help. thank you. /: