Should we start TTC? So my boyfriend is 24 and I'm 22. We love each other and know that we want to…

Should we start TTC?

So my boyfriend is 24 and I'm 22. We love each other and know that we want to have a family together someday. He has low testosterone levels ever since he was a teen. And somethings to do with his sperm that his doctor says will make it very hard to conceive yet not impossible. We weren't thinking in ttc till about 5 years from now but now I'm thinking what if we're just waisting time? What if it does take us years to conceive? I don't want to waste my prime fertility years if that would be the key to having a baby! I'm just searching for advice ladies! Thank you in advance?