Bri,
It's not obvious that you have a plan for what you would do if you retired. I think that if you retired and didn't have something to do, you could end up depressed at home - I have seen this happen to people. What sort of time off have you taken over last 5-10 years, and what have you done with that time? On the other hand, some people have no problem finding things to do when not working, and a sudden retirement would be welcomed. Do you have a hobby you could turn to, possibly even earning some money from it?
Some companies have a winding down period leading up to retirement, e.g. where during your last year, you drop one extra day per week every quarter, slowly winding down to 1 day/week, which gives you time to get used to not working and to find activities to spend your new free time on. Maybe you could negotiate something like that, or just negotiate going part time for a year?
If you have private pensions, book a free appointment with Pensionwise to go through them and tell you where you stand on early retirement. You might also consider paying for further advice from an independent financial advisor. Also, bear in mind you could live for well over 10 years, and during that time, new treatments will appear which could extend that or even offer a cure. You probably won't be being treated with today's treatments with today's life expectancies. This could make an annuity more attractive than it might otherwise appear - something to discuss with an advisor.