I want a baby.. scared of infertility but ready.

Please read this through. What do i do?

I have like something more than baby fever .. i don’t know, i really want to have a kid. I’m 20 years old. Me and my boyfriend of almost 3 years have talked about it a lot before (but in the future..) . Anyway, I don’t think he’s ready. I know he’s not ready and he does too. I have a stable job, and he doesnt have stability at all.. he honestly has had 8-9 jobs within the past year and a half. And I’m not talking crap. I love him, really. But he’s 20 as well and not capable of getting to work on time and keeping his jobs. I have thousands saved up and he thinks $50 is a lot in his account..

He knows i want kids in the future like super bad but he doesn’t know how i feel this way right now. I know I’m young and have plenty of time blah blah blah. But i honestly want to start a family.

We never use protection, I’m not on birth control or anything. Just the pull out method. But Ive gotten so worried that I’m not able to become pregnant, like seriously paranoid. I want to see a doctor because I’m so paranoid. Infertility runs on my moms side of the family..

How do doctors test in I’m fertile and how fertile i am? And what do i do about me wanting a family..? I can’t mention it to him. We are going through some complicated relationship crap rn and he could just think i want a baby to make sure he stays with me but i PROMISE that’s not why. I have felt like this for a long time.

Please respond