constipation

[tnavel]

we have a 14 month old who has been having very painful stools. She will just stop in her tracks and stiffen up like a board start shaking and crying. we took her to see the doctor and he said to give more of the "P" fruits (pears prunes peaches etc). we have done this. she does not drink any kind of juice. she will even look at the bottle and if its not white(milk) and she will throw it to the side. we have purchased suppasatories and these help but only after she has been in pain for a while. are there any over the counter stool softeners that are safe to use. we live in california.