Vegan period?

I’ve been eating vegan for almost a couple months now. And my last period was just spotting (June 24 - July 5)

I brushed it off because my diet changed, and I have an ovarian cyst so i figured that may have something to do with it? But now it’s been almost 6 weeks since my last period. (the last one didn’t come late)

I had unprotected sex in between all this, so I’m not sure what it could be? I also had trouble conceiving before, I don’t know if my diet changed that.

I don’t have health insurance since I’ve gotten too old to be on my moms, so doctors visits aren’t really a thing for me unless it’s necessary.

And I’ve been moving into my new place for the past couple weeks so it hasn’t been a priority of mine.

Has anyone else’s diet changes effected their period in a similar way? Should I take this seriously or should I continue to wait ?