Hi there. I have been having left breast pain off and on. It even happened before I was pregnant. It doesn't last long, like a burst of shooting pain from my breast to my nipple, it only lasts for a few seconds but then repeats itself. And it's only on my left one and not my right. The longest time I had it was for a day and a half. So my question is, is this something serious that I need a dr appt?