you have written that you are having Extreme anal pain
.But didn't mention whether it is seen while passing stools or even in normal daily activities.If at all it is seen during passage of stools,most probable cause could be Fissure in Ano
. It is break in the anal canal
.It's not a serious condition.
Nice to hear that your Colonoscopy
was normal except for Haemorrhoids.But,after colonoscopy,there is every chance of getting infection and colitis.But,there should be pain in the abdomen,associated with Diarrhea
Please take plenty of liquids,high fibre diet before you meet new GI doctor.Even haemorrhoids may also get relieved with this diet
You can also apply ointment locally in the Anus with the prescription of your doctor.
Hope everything goes on well.