I took a My Way emergency contraception dose on Thursday last week. Starting last night (Tuesday), I noitced a bit of stomach upset, cramping, back pain and bloating. This morning, after urinating, I noticed a fair amount of dark brown discharge. Today, I am still experiencing these period like symptoms and have noticed a bit more of the same dark brown discharge. My last period ended last Monday (over a week ago), so I am not due to start again for a couple weeks. Are these common side effects of this medication?