Pregnant ??

I've been on birth control pills for almost a month now and the first seven days we pulled out like I began to get worried so I waited a couple day before my period is supposed to be here and took a test but it came back negative so now idk what to do my period is two days late but I keep getting period cramps like it's about to come. I'm confused but I know there's a chance I'm pregnant I'm so scared.