nervous!😳

My husband and I have been TTC for 2 years, it has been quite as journey as my husband is paralyzed and gets UTI's a lot; so though it's 2 years from the time we began we have only got to try maybe half the time. We have spoken with his dr who recommended we wait to see a fertility dr until we were able to really try for a year and that was over a year ago. so the appointment is set and now the fear sets in are we even going to be able to conceive, what is it that's stopping us from conceiving  and can they give him something that will help. I'm excited to be taking the next step to gain answers but I'm so nervous of the outcome.