I've had 32 fluid ounces of coffee, now i have cramping, and gas. could the symptoms be side effects from the coffee?

Yes. : It should get better by tomorrow. If it doesn't, call your doctor.

Maybe: You may be sensitive to caffeine and that was quite a bit of caffeine. If you are needing a stimulant you may not be getting enough sleep or eating in a healthy way. This can all contribute to your bowels being irritable. Beans and emotional upset can also contribute to this. If this does not resolve there are many over the counter products to help with that problem.