I have extreme stabbing pain in my left foot. The pain only last a few seconds at a time however it is ! I actually scream out loud or grimace wherever I am at that time. I have a normal blood glucose level and do not have a family history of diabetes. This pain comes and goes. Sometimes 7 months apart but when it resurfaces it usually last about 2 weeks. I've seen a family doctor who basically dismissed it years ago but its getting worse. Please help

It sounds to me like cramping since you say it can be months apart.
Try taking a potassium supplement unless you are on dialysis or some other medical condition that you can't take potassium
You might want to check with a pediatrist.