My usual bloating and breast tenderness always goes away after i start my period. i'm on day 2 and feeling more bloated than before? what's up?

Hard to say: It is hard to draw conclusions when there are minor changes in PMS symptoms from one cycle to another. If you think you might be pregnant check then check a home pregnancy test. They are cheap, reliable and available at any pharmacy. Birth control can be very helpful at decreasing PMS symptoms. If your bloating continues schedule an evaluation