ive been having mood swings really bad and craving things and being so tired and feeling nauseas. i…

ive been having mood swings really bad and craving things and being so tired and feeling nauseas. i have two kids and i think i might be pregnant. i have been spotting twice in one week but also i have been having bad cramping like period cramps and back pains. i also had my period this month on the 8th can anyone please let me know what does that mean. ive been trying for 2 months with my fiancee.