Being bloated eating a lot more means nothing. You don't have to be pregnant to experience that. 'symptoms' of pregnancy mean nothing and they don't determine whether you're pregnant or not.
We can't tell you whether you're pregnant or not, only a pregnancy test can. Since you've been having sex since your period, then it's certainly possible. Wait till your next period is due and test with first morning urine if it doesn't show.
Dont worry your self as that can cause problems what may also be a sign of pregnancy (i did it) i woyld say wait a few more days and get a test to make sure as it could just be sigbs of worryin and stress :)
Hoped iv helped