Plz could use any advise!!!!

Could rlly use advise. So for 2 yrs and 3 months I've been ttc. 8 months in ttc my cycles were 60-70 days so I went to get help. He gave me metformin 3 months and cycles regulated and first month off I had a chemical. And it's been regular for over a year now except may 22 2021, that was my last period and it's August 13th and I still don't have a period which it was random and never missed it this long. So I went to go see someone diff cuz I moved but he said I had small cyst and have pcos he didn't do anything but said he wants to do a hsg test. I'm so lost. Been having bad back pain idk if that's related qnd idk if I have a 35 day cycle due to it being irregular again but