Looking at your history it looks like your smear was normal but there was HPV present. The colpscopy will show if there is anything else, but hopefully it just means that your body is taking a little longer to clear the HPV (which can happen).
It's important to talk to your doctor about hysterectomy if it's a question in your mind. What I would say is that it's not necessarily a straightforward opinion. My consultant was very frank and told me it's not a cure as the cells could still become abnormal in the vagina (VAIN insted of CIN), which is all a nightmare really as I don't feel it would be over if I had a hysterctomy. You'd have to have vaginal vault smears after a hysterectomy. Probably the doctor wouldn't look at this point for you but rather see what happens, however it's important you speak to them. It's a major op and not something to rushed into without serious discussion and there being a clinical need.
The whole abnormalities situation is so difficult and stressful to live with, especially when you don't get the result you hope for after treatment. I wish there was a magic wand but unfortunately there doesn't seem to be, and everyone has to to do what's right for them, with the guidance of their doctor. So do talk it through, and let us know how you get on.
I wish you all the best for your colposcopy.