I'm 15 and I'm pregnant I think. Kinda makes me happy no rude answers please ?

So ling story short I had unprotected sex on June 3 It was on a fertile day... And he pulled out but I kno that is NOT effective . So ever since then I am moody emotional. Dizzy . Fatigue . Sick . Sneezing alot . about 2 weeks ago I had light bleeding for a week it was brown but not like a normal period so I dint count it . I was supposed to start the 22nd this month I'm 5 days late now. But negative test !! I think I gotta wait till Friday to make me 4 weeks . But also i feel gassy like cramps but I read cramping is normal in early pregnancy so. What u think ??