Am i pregnant? When should i take the test?

Okay so me and my boyfriend had unprotected sex about 2 months ago, i don'tt remember how long ago it was, i know it was dumb but he pulled out right before, and yeah now were worried that im pregnant, around 2 weeks after we had sex i got my period and it was different, it wasa lott less blood and i usually only cramp the day before and the day of, it lasted not as severely as usual but for about a week, but recently ive been extremely gassy, peeing and having to go to the bathroomA lott, ive had headaches, tender breasts, stuffy nose,dizzinesss and ive been eating quitea lott because im always hungry, ive been completely exhausted , and a couple of days ago i started cramping, i started bleedingyesterdayy but once again its not even close to my regular period, so imcompletelyy confused and idon'tt know if i am or was or when i should take a pregnancy test.