Concerns !!!!!

Okay so , this is my first post and I’m not sure what to say ! I’m going to try though. My names taylor and I’m 18 kind of younger then most women on here I assume. I’ve been trying to get pregnant with my partner for a few months now but as I’ve become more interested in it I’ve realized my periods are irregular by a long shot and I’ve known for awhile but I didn’t know how big of a deal it was and im not quite sure how to fix it or how to get everything back on track to begin getting pregnant. Any advice tips or etc ?!