2 periods last month, none so far this month.?

I had 2 periods last month(March). One on the 2nd and one on the 18th. Both were normal. Took two pregnancy test. Nothing showed. Was supposed to start April 2nd. Like I do every month. But haven't started this month. Started ovulating on the 14th. It is now the 20th of April. Still nothing. Should I worry? What could be happening? And no this is not a oops. I want to have a baby. I just want to have some other opinions about this before I actually do go to the doctor. And please don't be cynical.