Found out I have irregular period

Mallory

My story starts back at the end of May I had a scan of my liver that showed a benign adenoma from my birth control. I stopped the birth control immediately. At the end of august my husband and I have been trying for our first. I was supposed to get my period last week and now today, 9/18, I a 1 day late. I took a pregnancy test and it was negative. How long should I wait to take another?