Non-stop urination, irregular bowel movements, pregnancy?

Patient: I am on birth control pills. I got my period a month ago, and two weeks later I took a pregnancy test, but it came out negative. Now, I’m just waiting for my period to come by this week or the next. Recently, I have been experiencing non-stop urination and bloatedness. I do not know if the bloatedness is because of me having an irregular bowel movement and not taking a poop for 4 days now. I also don’t know if I could still be pregnant. What can cause this?