don't stress too much. i may be young but i know a lot. it doesnt sound like your pregnant. the sex may have thrown your cycle off course. assuming that you're not on bc, give it another month and see if your cycle starts regulating again. if not by the end of the second month, i would recommend taking a pregnancy test or seeing a doctor.

hiya well i'm going thru the same thing as you and i know what its like, though i had some light brown spotting to, i'm waiting till the tests are more acurate, don't want to get a test and it tells me i'm not pregnant when i am you know, bu ti'm feeling the same way as you the extrem tiredness, the feeling sick, the bloating and so on . i feel pregnant, some people say you can't feel the pregnacy so early on but you can. you know your body better than any one and know when theres some thing different, been told theres early pregnancy test tho they too are not always accured, but there's a strong chance you are , but still a change you ain't but either way you need to know either way,