not sure

so Monday me and my fiance did the deed nd till continue to since this week it's my fertile week and anyways Monday night I started to cramp and boobs started to hurt anyways up today I been cramping and my boobs still continue to hurt And i do feel like I Wana puke but from Friday to Monday I didn't eat so I figured oh well that's why but after eating Monday night that's when the cramping and boobs hurting started to happen anytime time I eat I don't feel good ... my period was from may 25th .... so me cramping and stuff cuz I didn't eat for 4 days or is it cuz I could be pregnant ????