Hi, it is highly possible u always had the GERD but u just did not have all the same symptoms u have now.
And if that is the case, just stop smoking will not make the issue go away...there r other lifestyle changes in addition to the stop smoking u already achieved and there r also dietary modifications u would need to implement as well.
See ur Dr for more info as this is a support forum....and all we can do is offer suggestions from our experience.
Good luck and do keep us posted on ur progress
It will get better. Just stay off the pimp sticks.