Please help!!

I'm not due for AF for 6 more days but I have been so so tired and eating more than usual and didn't know if this was side effect or not but for some weird reason I cannot stop burping!! Seriously it is ridiculous! I wanted opinions on if I could possibly be pregnant me and my fiancé have been TTC for 7months now I'm 26 and we have sex almost every day especially  ovulating ! Please help