My seven year old is having a problem also we started mineral oil again today. He eats bran muffins daily and prune juice. We have to go back on Friday to see if it is soft enough. The doctor says it is the size of a football. One of my neighbors does milk of magnesia with her son he is now ten. It is not supposed to hurt you. Check it out or go to a specialist. If you Haven't allready. This is the first time ever replying to anything like this hope it helps some. Karen If you E-mail back please in subject constipation I don't usually answer address I don't know.