infant stomach problems

My 2 month old son seems to be very cranky all the time even when hes hungry or full. I dont think hes colicy at all? But i told his doctor and he suggested to give him a little cereal. Hes been taking it fine for about a month,until recently it seems he doesnt want it anymore. Almost as if it bothers his stomach? But he does injoy a little cereal in his bottle before bed?!?

What im trying to get to is my son seems to be very unhappy during the day to the point he wont sleep much.
gas drops, warm baths or even breastfeeding seems to help much!!! Im very confussed and worried.[/b]