What Causes Back Ache, Weird Sensations In Abdomen And Dizziness?

hi, I ve been having these symptoms for couple of days now. backaches, weird feeling in my stomach, sometimes dizzies or light headed, bathroom breaks, constipated, breast feels sore and some what burning. sometimes I feeling bloated and life bubbly in my stomach and sometime I feel like theirs something in there.? is it possible that I m pregnant?