You are on birth control and you keep getting your period but it just feels like im pregnant?

Technically the way you constructed your sentence you're not really asking a question but here's a possible explanation to what I think you might be asking. The way Birth Control pills work is that it tricks your body into thinking that it is already pregnant so that you don't ovulate. Hence the birth control box will state symptoms similar to pregnancy symptoms (i.e. bloating, nausea, vomiting, etc)