So my girlfriend started birth control on January 31st it was a Sunday she took every pill at the same time during the month of February and then started the sugar pill on Sunday February 22nd and got her period on the 24th, then the day she got of the sugar pill and started the hormone pill we had unprotected sex, and now it's March 24th and she's really worried she's pregnant, for the past couple days there's been brown mucus stringy stuff discharge. Can someone tell me what this is. And is it normal to be a little late on the second month of birth control? She's never missed a pill and always takes them at the same time every day.