Oh, that has easily been a year. or more. I did my share of research, decided to wait and try with weight watchers (again) for at least 6 months. But once the decision was made it was a no-doubt one.
I would seriously suggest to take a couple of weeks, see how it feels for you. Ask around, read up, listen to your heart. It is a irrevocable procedure, and also a life changing one. Are you willing to give up old habits? Do you really feel okay with no more carbonated drinks, careful with what you put in your mouth, never have drinks with your food and so on. You really need that determination, it is not an easy process and there WILL be bumps in the road. Some people have life long problems, others go through it like a breeze, but you will never be the same anymore, that is for sure.
Then again, if the decision clicks, and you are no longer in doubt, I would say go for it, and don't forget to enjoy the ride!