Ive been on the patch a month now but on my 3rd week on my patch change day I kept the patch off all day. That night I had sex I put it on a few hours before. My bf finished in me. And my cycle normally comes on around the 2nd or 3rd of the month so in June my cycle was normal but I had 2. Because it came on early like the 27th of June and June 3rd. And it wasn't normal it was lighter then usual and I had a lot of brown discharge and spotting. My cycle was on and off for about 2 1/2 days. I have been super nauseous and crampy. Even the smell of certain foods make me sick. Could this just be side effects of this BC or could I be pregnant?