Is it difficult to get into Internal Medicine?

I am currently a patient in the cardiology department. I was able to get in with zero issue for a heart condition that was found immediately postpartum.

But now, 2 years later, I have a plethora of other issues that have come up. They were an issue before my pregnancy, but have significantly worsened. I was sent to a local rheumatologist who was less than kind, so I figured I’d reach out to the same department at Mayo. I was told it’d be best to apply for Internal Medicine so they could look at my full picture, not just a bunch of separate issues.

I’m just curious if it’s been difficult for people to get in? Especially if it’s technically a self referral? My primary did send a referral for rheumatology now too & I still see cardiology… but I self referred for internal medicine.