Hi
TH!
Missed periods can be scary, and I know how scary because mine can be pretty different from one month to the next, and sometimes I second guess if Im pregnant even though I havent had sex at all yet. Its okay though, you already know everything you need to know. You have a history of irregular periods and you havent had sex. I bet youre coming out of a stretch of regular periods, which is a pain, but it is what it is.
I hope they smooth out for you again soon.