not trying, but scared I may be infertile 😥

Hello! I'm 23 years old and am still in college. I haven't been trying to get pregnant because I don't think I'm stable enough to have a family yet, but I'm scared I might never be able to. I've always had funky periods and they've always been irregular and very light. I'm scared that by the time I'm ready to have a family I'll be infertile or something. I dont know whether to start trying to see if I can get pregnant or not, but also I don't want to do that because I want my kids to have a good happy life. Any words of advice or encouragement would be greatly appreciated. And I know it's probably my anxiety acting up 😕