I have been having tenderness in my breast and sore nipples for the past 2 weeks now. I have also been going to the bathroom more frequently. I did have a UTI a few weeks ago that may not be completely gone, which would explain the increase in bathroom trips (no burning during urination or sudden urgency, just increase in frequency). My period is not due for another 2 weeks and I just started my first pak of BC a few weeks ago. Any idea of what could be going on?