Isn't it better to find out? I.e. first to stop with the caffeine, then wait until your body readjusts (e.g. a month or two), and possibly get diagnosed by a professional in case you do feel like you need help? Diagnosis doesn't necessarily mean prescription stimulant drugs.
I was using caffeine to mask my burnout. Needless to say, it only exacerbated the total feeling of burnout, and "helped" only short-term. It took me a long time to get out of the burnout, and I'm still feeling the effects. It would have been much healthier to not mask the burnout, but deal with it right there and then.