So this maybe a weird question but here goes nothing. So I was on birth control for 2 months to help…

So this maybe a weird question but here goes nothing. So I was on birth control for 2 months to help my cycle regulate and then the 3rd month I stopped and wanted to see if my period would come or if I would get pregnant. Well I didn't get pregnant and my period didn't come so I decided to take my bc again. So what if I was pregnant and was taking birth control what would happen? Would the bc control still make a period come even if I'm pregnant? Please be kind if you comment. I have take 3 test and all negative.