Irregular Period

Hey guys, I came here cause I’m beginning to worry. My cycle length is usually 35 days at most, and I have my period for near 7 days. My period is extremely late, and now my cycle has been 45 days. I’m 19 years old and I know I’m not pregnant.

I’ve read it can indicate your fertility if you keep having strange irregular periods, which I do :/

Just wondering what length you guys have and if it would put my mind at rest, I might also talk it out with my doctor later ♡