New to Glow and overwhelmed!

My husband and I just started trying again after his bout with cancer. We tried for almost a year before he was diagnosed and had to wait a year after he finished chemo before we could try again. The very next month, I had an early miscarriage and now I am not sure I have the courage to try again. I just barely downloaded this app to try and help me figure out the best days for us to conceive but it is a little overwhelming and the truth is I don't know how much more disappointment I can handle. Advice would be greatly appreciated. Thank you.