Had a hysterectomy years ago but I've been bleeding and cramping lately and I'm scared. What could this be?

Yes, you need to call your GYN and get in ASAP.

Anyone have a theory why this question/topic pops up here like clockwork?

I'm sorry for your pain and anxiety but this isn't a medical forum. No one here is an MD and can give you a diagnosis. Please call your OB today and get checked.

https://www.health.harvard.edu/womens-health/postmenopausal-bleeding-dont-worry-but-do-call-your-doctor