Period 2 weeks after last period?

Brandy • Married 1-11-14 and we have a wonderful 3yr old due with #2 in January 2016
So my cycles are pretty normal between 29-31 days apart and usually 3-5 days long my last real period was Feb 13th and then 14 days later on the 27th I had three days of heavy bleeding I was supposed to ovulate around this time honestly I figured it was another period til I realized it had only been two weeks since my last one... Now my period is due and hasn't come... Could this throw me off and make my period come two weeks from now or is it supposed to come now? I'm confused as to why I would have heavy mid cycle bleeding.