When to get Boob Reduction?

Hi everyone. . .My breasts are a 40G. I weigh 250 pounds. I have been having a hard time exercising the way that I should because of the weight of my boobs. They hurt after almost every exercise that I do.

My question is...Should I wait until after I lose weight to get a breast reduction...or is it more worth my while to wait until after I am at my goal weight. I have an appt with a plastic surgeon soon, but I want to get other people's input.

Has anyone has experience with this?