I have been on nexplonon for two years now. The first two months on it my periods we very frequent and then i got them once a month for four days like normal since. I woke up this morning with light brown discharge when i whipe. I had my last period on the 14th but me and my fience had sex a week ago unprotected. I heard it can be a sign of pregnancy. Am i pregnant or is it a side affect of nexplonon