What is within scope

Good morning everyone!

I am a OBGYN nurse at an ambulatory clinic, my physician had an emergency delivery and I had to see some of her follow up patients. One of them had a sort of granuloma/skin tag cauterized inside on the lady partsl wall just past the vulva and I just had to check if it's healed or any redness and if so she would have to wait for actual doctor. So I used the plastic disposable speculum to take a better look (harder than it looks) I did not go too deep.

Everything was fine but I wanted to ask if RNs are allowed to use a speculum on a patient, I wasn't diagnosing, the doctor just wanted me to see if it looked healed, which it did.

I tried googling this but only found stuff with sterile speculums or pap smears, those we aren't allowed I know.