I am on Microgynon 20, and since i started using it, i get brown discharge for almost a week before my period is actually due. When im not on the pill, i noticed big changes in my body the week before, my bust went up a cup size and i was quite bloated. since starting the pill, i have not noticed any changes in my body around my period, apart from a tiny cramp or two and just the brown discharge before. It does not smell, however it is quite dark. Could this be a side affect from the pill?