I had a couple of days after my period then a few days later had spotting ?

then my period come at the right time but i normally get cramps and pains before my period like 5 or 6 days before but i only got about one so i tought i was gonna miss my period before my period i thought i was pregnant but i had my period but all iv had is headaches am alays tired & sore tummy like its reallty tender and saw and my stomach hurts sometimes wen i move and if i touch it by uterus and by my belly on im eatin alot i have urges to eat iceing and chocolate .... its strange i feel sik we i lookat food too sumtyms ! but i dont see how i could be pregnant but i had spotting but then had my period its all strange?? could you help?