I'm on birth control and I have been having really weird 'periods'and breakthrough bleeding I say it with the quotations because every day that is circled red I wouldn't necessarily call a period just because all those days i did not even bleed enough to get anything on a pad or liner it was solely there when I wiped for all those days. The past month i have been having horrible mood swings, excessive sweating, higher then normal blood sugar, and pretty bad nausea. I have no idea whats wrong with me i shouldn't be pregnant but i have no clue what would cause all this