PSA - get your colonoscopy

Does it count if i had one when i was 27, since i was kind of a hypochondriac back then ? Even though it’s been 20 yrs ?
It's reccommended every 5 years if you test clean. Every 3 years if the doctor removes a polyp. I'm on the every 3
years list since the doctor removed one on the first. I was clean on the second one two years ago.