ive been off my period for 2 weeks and ive been cramping real bad?

my period didnt last very long either. it was very heavy and it got light . lasted 5 days. usually it lasts a week. & now ive been having real bad cramps for about a week. i feel pregnant sometimes also. i taken 4 pregnancy test all negative. but ive been having cravings alot. like sweets & chinese . & i know what pregnancy cramps feel like . i have a son so dont be putting negative comments . me and my husband havent had sex in a week but it was unprotective. and theres just a little bit if discharge.