"i have been on for 1 month and a half.  my period lasted for 10 days, then i came on again in the same month for another 10 days. that was all new to me. sex drive has increased. my period is still irregular so i&#039;m waiting on my next period.  slight headaches and i feel sick sometimes. this is my first birth control and i haven&#039;t been on it long. things may change. not sure."