Not ovulating after ectopic?

I had my right tube removed and my cycles have been all out of whack. Doctor says I'm probably not ovulating. To wait a few months tracking my cycles and I may need fertility treatments. My question is has this happened to anybody. I've had 4 pregnancies with 2 live births and idk why I'm having issues now getting pregnant(besides missing a tube) kinda down as we are ttc baby number 3