I am attracted to women but also men's butts

Hey guys, I am 17 I have one kid already she was born on april, 6th and at the hospital before I went home I got a birth control shot that lasts 3 months but I didn't take it anymore just got it that one time it is now December the second I have been feeling real dizzy lately having really bad headaches and back aches and yesterday I had diherra I have been eating a lot to but I always have ate a lot but it feels like more than usual someone help me could I be pregnant I haven't missed my period yet its suppost the be here the 10th or before.