My baby every night she cry for leg pain , even though not that high activities during day time? What will be the reason

A. Kid might be walking a lot in this age and that is why this is happening she little bit of leg pain can be commonly seen after the age of 3 1/2 to 4 years till the age of 13 because it is considered as growth pain so currently I’m just going to advise you to massage the legs well with warm mustard oil and check with the doctor if you need to start with calcium and vitamin D also