Back in February, I experienced a similar bleeding. It started mid pack as well. I had gotten my period the last week of January (all normal). About a week or a week and a half later, I started bleeding again!!! I got worried, so I went to see my doctor and she said, "oh don't worry, it's normal, it's probably just your pills... keep taking them for a few months just to confirm it's the pills and if the same symptoms occur, then we'll switch you to a different brand..." Can you believe that??? If they're all ready causing me ANYTHING... take me off of them... don't wait til... "oh just keep taking them and if they kill you... then we'll know it was the pill..." Ridiculous! I already changed my doctor! Anyway, I bleeding for 2 weeks. Then I continued the pill. The next month, my period was what I can say "normal", but the following month, I didn't get my period at all practically. I just noticed some spotting, so I got a tampon in just in case.. for my whole 'period week', i just kept spotting on my tampons. As if it wasn't a real period. I don't know what's going on. And honestly... I don't believe these doctors anymore with their "the symptoms will only last 3 months... or it's nothing serious... it's normal..." bull crap!!!