Help!!!

Hi everyone just posting this to get abit oh Imformation & to set my mind at ease! I have been trying for a baby a little while now but nothing seems to be happening however I haven’t had my period in nearly 2 months, my boobs hurt (mainly my nipples), I’m tired all the time sometimes feel sick but not actually sick my back hurts and can’t stop eating! I have taken a pregnancy test and it have come back as negative really don’t know what to do what could this mean??!!