bc

I just recently started taking orthotricyclin, (im not through the first pack yet!!) and my period lasted much longer than usual. It isn't a full period now, but I've got that brownish colored discharge still, and my period has been on for over a week. Also, I feel very nauseous throughout my day, so much so that I don't want to do things because I just feel bad. Does anyone know if this is a normal side effect, or has anyone else experienced this? Please help, I want to know if this is normal or not! Thanks!