I've been taking microgestin fe 1/20 for almost a month now and this is my first time taking any form of birth control. 3 weeks into the pack i started experiencing break through bleeding and it was somewhat close to a normal flow. Now this week i'm on the brown pills and i'm barely spotting, definitely not as heavy as the week before. Was that my period last week or is still going to come this week? And if not could that mean i'm pregnant?