I'm assuming you have Medicare. If so, do you have an Advantage C plan, or Original Medicare Part A and B?
Most Advantage plans are HMO style, so you need a referral to see a specialist along with pre-authorization for many diagnostic procedures. Part B, you can see anyone that accepts Medicare, no referral necessary. Either way, you need to be checked by a Gastroenterologist.
Bleeding is not normal. Even if it goes away, you still should be checked by a Gastroenterologist.
My story... a cautionary tale about not following up.
A few years before I had a colostomy, my Gastroenterologist told me my blood tests showed a low hemoglobin level. He said I was bleeding somewhere. But... where? Being healthy, I refused his offer of CT/MRI scans, various scope probes, and ultrasound. I felt fine, no blood was coming out anywhere. A couple of years passed. I had a colonoscopy... showed all was well. But every blood test still showed low hemoglobin. Then it was noticed my pulse was at 110, blood pressure 90/60. Yikes. But I still felt fine... until I didn't.
Decades ago, I had 3 hernias repaired with mesh. 1 umbilical, 2 inguinal. The 2 inguinal repair meshes had migrated onto and wrapped around my colon, causing it to bleed. The blood was absorbed by my body. That's why I had the low hemoglobin level. Eventually, my colon was punctured in 2 places, which allowed colon contents to spill into my abdomen, causing a sepsis infection.
If I had undergone my Gastroenterologist's recommended screenings, the wandering meshes might have been discovered in time to save the 12 1/2 inches of colon that were destroyed, resulting in a permanent colostomy. I was very lucky. One mesh had adhered to my bladder, nearly puncturing it too. That mesh was removed just in time.