Is this Fertile Window For GLOW Accurate?

Hello! My husband and I are trying to get pregnant for quite some time. Well I feel like I am not in between my fertility window, not having enough sex and is always coming on my menstrual all the time. Well, back then I had surgery on my overies where there was cancer developing. My husband says we might not be able to have children. I'm not giving up! I want us to have another child. My question is do I wait until my appointment to talk to my doctor about my concerns? Do my husband and I keep trying? What do you suggest? Positive comments please. Thanks!