Gecko Impaction

Question
My name is Sarah and I have a sunglow gecko. I feed her crickets twice a week. Her tank has a heating pad underneath and a heat light as well that I keep on at night. In the tank there is sand. The last time I fed my gecko she threw up a couple days later. I tried feeding her again today which is probably a week later and she only at one cricket. I called my sister and asked her what could be wrong and she told me about sand impaction. She told me to look under my gecko's belly and see if she has a dark spot and she does. So she told me to give her a warm bath and rub her belly to see if she'll maybe throw up. I tried this earlier and nothing happened. She still has the dark spot and refuses to eat. I cleaned all the sand out of her cage and put paper towel down. I've been looking up other things I can possibly do to save her but I'm not sure what is best and what is right. I read that feeding a drop of mineral or olive oil will help but I'm not certain. Also I read about pedialyte; do they mean the children's medicine? I don't know what to do and I'm really concerned. I want To do anything possible to help her. Should I give her olive oil? Whats the best thing for me to do without having to take her to a vet? Please help.

Answer
 Keep with baths, dilute the pedialyte by half and offer her enough t  keep her hydrated, also a few drops of olive or coconut oil.  If she does not pass the mass, get her to a vet.  If you have been using one of the bagged calcium sands sold in pet stores, I would say she needs a vet first and foremost!  Calci-sands clump when wet and becomes a hard mass that would need professional attention.