What Causes Brown Discharge, Fatigue, Loss Of Appetite And Bloating?

I missed one of my pills, i am on dianette, i then took the missed pill on the first day of my 7 day break which was around 2 weeks later, my period then was light and more like a brown discharge not blood. I am now waiting for my second period since this happened, but i have been feeling sick, tired all the time no energy, lost my apetite and i am extreamely bloated. is there any chance i could be pregnant or could this be relating to something else?