I Think I'm Pregnant But I Don't Know

I'm 22 years old. My periods jus got back normal, but in December it only lasted 2 days an last month I was spotting. I feel like my stomach is getting bigger. My breasts ain't sore tho. And I get this discomfort feeling in my stomach area when I try to relax. I wake up sick to my stomach past few mornings. I can't seem to fall asleep anymore at night, like I can't get comfortable. And I been gettin dizzy an light headed very often. That picture is recent, if it's too revealing I'll take it off. Anywho I wanted run this by ya'll before I got a pregnancy test. I'm new to all this..