Sorry to hear you are having so much trouble. It is somewhat difficult to understand your typing but for burning and itching I have found the Ilex skin paste to be extremely helpful. Others in this group like the "ziincofax baby ointment". Ilex is worth the money but can be bought on Amazon for a little over $20.
Give it time. Things will be way different at 4-5 months than they were at 2 months.
For decreasing how many times you go to the bathroom I think maybe you should contact your surgeon this close to your surgery date but maybe others here will have more suggestions.