I am in a similar situation. Going to the toilet a lot and bleeding. My bloods were fine other than low B12 which she didn't seem concerned about. Did a FIT test with a result of 400. So like you I was really worried. Had a colonoscopy last Wednesday where they found inflammation and some ulcers. They took 8 biopsies, which I am still waiting for results from. So it's most likely something like Inflammatory bowel disease. The colonoscopy was absolutely fine! They give you a sedative which makes you feel chilled and a bit woozy. They said I could have gas & air too if I needed it but I didn't. It wasn't at all as scary as I imagined! Afterwards you just rest for about an hour, have some tea & toast then they will go over your report and then you can go home. The worst part for me was the bowel preparation. The laxatives they give you to drink are difficult to drink. I had to have 2 doses and it literally took me 2 hours to drink each dose! Honestly don't worry about the colonoscopy you will be fine. Just make sure you drink and eat plenty when you get home afterwards. I felt so tired when I got home I just went straight to bed and when I woke I felt horrendous. I really should have ate and drank plenty before I went to sleep as my body was just so empty. Hope that helps. 

I am in a similar situation. Going to the toilet a lot and bleeding. My bloods were fine other than low B12 which she didn't seem concerned about. Did a FIT test with a result of 400. So like you I was really worried. Had a colonoscopy last Wednesday where they found inflammation and some ulcers. They took 8 biopsies, which I am still waiting for results from. So it's most likely something like Inflammatory bowel disease. The colonoscopy was absolutely fine! They give you a sedative which makes you feel chilled and a bit woozy. They said I could have gas & air too if I needed it but I didn't. It wasn't at all as scary as I imagined! Afterwards you just rest for about an hour, have some tea & toast then they will go over your report and then you can go home. The worst part for me was the bowel preparation. The laxatives they give you to drink are difficult to drink. I had to have 2 doses and it literally took me 2 hours to drink each dose! Honestly don't worry about the colonoscopy you will be fine. Just make sure you drink and eat plenty when you get home afterwards. I felt so tired when I got home I just went straight to bed and when I woke I felt horrendous. I really should have ate and drank plenty before I went to sleep as my body was just so empty. Hope that helps.