Hello

I have been bleeding from my rectum for a while, I had a colonoscopy in Feb 2017 and I have an ulcer. Since then I started noticing strange noises coming from my bowel, especially when I feel like I'm digesting food or before using the toilet. My bowel is quite bloated too. 

I asked my doctor in May and he said that everything will go away but now after 6 months I'm still having the same problem. Does anyone know what to do? The noise can be quite loud and can be heard from people around me. It only goes after I use the toilet but the bloating remains.