Irregular periods after miscarriage (TTC). It’s been 2 year’s since loss, is this normal?

I have on average a cycle every 21-31 days. Always random. Never the same or on time. This started about 1 year after my stillborn miscarriage. The year after the miscarriage periods were normal.

TTC and it’s not happening and I’m sure it’s because I’m either not ovulating or whatever because my periods are never accurate.

Has anyone else seen this before? My doctor does Pap tests but never pelvic exams where she feels inside because honestly she’s just an idiot. I could go on about her lack of a brain but don’t feel like making this about her. Bottom line I have no clue how to help myself. Is this a sign of something more serious?