So confused

Danielle • 31 years old, homemaker. Trying to conceive our rainbow baby since February of 2015. (One pregnancy/miscarriage in 2012)
Here's the deal. I ovulated on April 14th. My period was due on April 30th.  I took a pregnancy test on April 30th and it was negative. Now I'm 2 days late. When should I try another test?