Help Please! Something Strange.

Skylar

So I have a pretty regular period it comes within a few days of a month, every month. I haven't had sex in over two full and heavy cycles, which is normal for me. But for the first time I am bleeding irregularly. I woke up this morning and I was bleeding. It is kind of moderate to heavy which is really what concerns me. Today is my ovulation day. Is this healthy? What might be causing this?