I used to chew gum a lot, which led me to have a stiff jaw and it would pop a lot. i haven't chewed it in quite a while, and although the pain isn't there, will i have jaw pain in the future because of it?

Not necessarily: The jaw joint is pretty resilient and a lot of people have asymptomatic popping of their joints. It is probably best to avoid the gum chewing, though.

Possibly: The odds are that if you have quit chewing as much and your jaw joint is doing ok you are probably ok. There are some studies showing that using a xylitol containing chewing gum and chewing some after eating can be benificial. I would be just as much concerned with the intensity of your chewing.

Gum chewing pain: Gum chewing puts stresses on your jaw more so than typical eating, etc. So with that in mind, if you have any disfunction of your jaw it will be magnified. Most of us have such "disfunction" (not perfect alignment, etc) to varying degrees. Chewing gum is therefore not real healthy for most jaws, though some chewing is generally tolerated. I do not believe there is damage. Just lessen your chewing.