Afraid I can't conceive

I haven't started TTC yet because I want to accomplish a few things before I'm ready. I've spent most of my life saying I never wanted kids anyway until the last year. But I'm so afraid once I get around to trying that I can't have any all along! Like I'm so worried that now that I'm liking the idea and learning more thru this app and other resources of conceiving,parenting etc that I'll be unable to and then I would have wasted all this time and energy for nothing. But I don't want to not prepare ahead of time and wait to get pregnant because then I'll feel unprepared and that would give me a lot of anxiety. Anyone else felt this way?