J., my oldest daughter had the same problem when she was a baby. I never really figured it out, but she did still have trouble with it when she was older. Basically she was acting like she was having nightmares and it was difficult to wake her up from them. After potty training, I would take her to the restroom and then it would stop and she would go back to sleep. You may consider gas drops. Not sure about the name, my youngest is now 4, but sometimes the gas pains can cause them to cry like someone is beating them. I like the idea of the teething, and would recommend, with your doctor's ok, herbal teething tablets. They are homeopathic and can be obtained by just asking the pharmacists. They are over the counter but they keep them in the back. LOVE THEM!!! One or two little tablets and happiness returns! Best of luck and hope this helps