why am i feeling hot and nauseous?

lately for the past 3 days i been feeling very hot like hot flashes even if i have the AC ON and fan in my room.. Today i ate soemthing and threw it up.. Also i’m cramping alittle on my lower stomache . my period isnt til like 2 more weeks or less.. so i don’t know why i’m having this? i feel weird and sick.. and hot ! Like a fever type thing but i checked my temp and it was normal🤔 so where’s this temperature coming from then???