Just started

So I'm alittle baby crazy, my hubby and I have been married 2 years. Been together 6 years, and we just started trying for our first child. I'm 26. And very eager and excited. My sister is pregnant with her second. And I just want it to happen already. I've been off ths pill for 6 months, we've officially started trying 3 months ago. But... I have sorta irregular periods, so I'm very worried if I'll be able to conceive at all or am I just overthinking. Even before starting I kept having this weird awful fear that I wasn't going to ever have a baby. I really want to be a mom! Help , I need some input. Am I stressing over nothing? Overthinking or what ?