"More invasive" checks/Dr. Appts?

Ra

Hey everyone! Just out of curiosity... At what week do the doctors start doing cervical checks etc.? I have noticed some of you saying you're already dilated or effaced at 32 (give or take) weeks pregnant, but my doctor hasn't done any of that. They just check my vitals, I ask questions, and they measure my fundal height and check baby's heartbeat. I'm currently 33 weeks along, so I was just wondering when to expect that? Is that normal that they haven't done any internal or more invasive examinations yet?