31 yo female insight/advice for colonoscopy/EDG

[Bdub4386]

I'm a 31 year old female. I had a edg and colonoscopy. The EDG showed gastritis, as for the colonoscopy They found 8mm sessile hyperplasty and one 20mm sessile adenoma polyp.  (20mm like wow, they kept saying rare..unusual during explanations) They said when I awoke after procedure, that day could have saved my life. I agree, it's nearly impossible to find info on sessile polyps that size for my age. Doctor is suppose to go into further detail on my follow up appointment nov.1st. I was also told I would have to do another colonoscopy in 6mo. Advose or any one else have similar issues??