What should I do??

So my period is 1month late. My last period was in September, I haven’t had sex since early August, but I’ve had 2 periods since then. I also went off, on again for 2mons, then back off the pill & took a plan b all within 4mons, are my hormones super out of wack??

The only reason I didn’t take a pregnancy test is bc I have no reason to believe I’m pregnant & also bc I thought I’d see if I got my period this month.

Anyone else experience something similar? Where your hormones got thrown off from plan b & or the pill??