I have daily headaches and go to the bath room several times a day. My tumor is 1.5cm in size. The symptoms will get worse over time. I know the whippo is scary but on the insulinoma support group out of the uk on face book talks about people who had it with this condition all the time and they feel better than they have in years and have not become a diabetic. The recovery can be rough but you have to plan the long game