I would get it checked out, just because when we were seeing a podiatrist about DD foot issues, she said that toe walking was a harder problem to resolve than others (DD was not walking at that time but had other feet problems) and because is mainly one leg. If tendons are shorter on one leg than the other for example easier to help the issue earlier it is looked at. DD saw a podiatrist through the council was referred by MCHN and she was very good and only about $20 a visit.