i ended my period about 2 1/2 weeks ago, but since then i have had brown discharge everyday except maybe two, plus also some very light bleeding on a couple of days. today i started feeling nauseated and have no idea what is going on. my period should be starting in less than a week. i am on birth control for like 4 months now, but have been on it before and this has never happened to me. what could be going on with me. someone please answer me.