TTC for over a year now discourage

Hey!! My name is Kristen I have been TTC for my third child. I had the morena and had it removed a year and some months ago. Then I got diagnosed with endometriosis and had surgery. Everything has been better my husband and I have tried every possible thing. I don't feel like my period is coming to start but test have been negative. I go to my obgyn in a week for this issue I'm so upset does anyone have advice or tips?