Am I pregnant?

On Tuesday, I had sex with my ex boyfriend. We went two rounds with a condom. The second time he thought the condom broke, but I didn’t feel anything inside me when he came. I took both of the condoms and filled them up with water and nothing spilled out & I checked 10 times with water and without. When I sat on the toilet nothing came out of me and I was dry. And when he came both times he immediately pulled out. But Wednesday and today I feel gasy and really stressed out because I been reading symptoms online if I’m pregnant or not. So far I’m just gasy and sometimes when I stand up I feel light headed. I did I home pregnancy text with tooth paste and my urine and the tooth paste did not change but still I am very worried😭 help. I’m only 16