Newbie to TTC question!

Hi Ladies, 
​So I'm hoping you can clarify something for me about the glow app. It is my first month off of BC and according to my OPK, I did not ovulate during the peak says on the glow calendar. My husband and I had sex anyway, but I noticed that when I logged the info into how, the percentage of probability did not go down, even though I have have not ovulated (and have imputed that info daily). If anyone has any answers if appreciate it. I'm new to the TTC world and am already feeling kind of bummed that I've gotten negatives on my OPK. I have endometriosis and ovarian cysts, and I'm really hoping this isn't the first of a lot of negative test results coming my way ? Thanks again!