Hey mate, you're on the ball with the scope.
And your doctors are GOOD to double check. It should be standard in my opinion.
Unfortunately I was in your shoes about the same age and my docs took the other method.
3 GI docs in 7 year period told me the rectal bleeding was most likely just roids and fissures.
I blindly followed their expert advice until 44. My PCP didn't even want me to do a scope until
I pressed and blood was found in a stool sample. This time I refused to not be scoped and WHAM stage 3b.
Obviously if you're seeing blood its most likely lower colon - sigmoid to rectum and probably very early on - it may just be some polyps or not even related.
You're golden to be proactive. Don't fret. You're doing all you can.
3/29/17 diagnosed CRC - 44 y/o Male
4/17/17 ULAR - Straight anastomosis - no ostomy.
Path: low grade T3n1m0 - moderate diff.
KRAS - NO, MLH1/PMS2/MSH6/MSH2 - Normal.
5/3 med port install
5/22 folfox - first treatment.
3rd treat, delayed - low ANC - reduced to 90% OXI
zarxio all treatments
Treatment 7 reduced to 75% OXI
Treatment 8-12 - NO OXI, just Luke and 5FU
10/20/17 CT- NED
3/18 Scope - Clean
7/18 CT-Scan - Clear, but CEA 4.6
8/30 CEA 2.6