49 days late on my period, but don't think I am pregnant?

I had my last period on August 22, then had bleeding on September 3 and 4th, it was lite then again bleeding on the 7th, which I went to the gyn and they said everything looked ok, they did a l ultrasound and everything looked normal no abnormalities. But today is October 9th and nothing. I had bronchitis last week, but I have been nauseous and threw up a couple of times in the evening or acid coming up after I eat spicy or greasy foods. Has anyone else had this? We are TTC, but I don't think that I am pregnant just having an anovulation period, but don't know when it will p.