Side effects from ab belt...?

I have been using the Sport_Elec ab belt and i have been having pains after using it on both sides of lower stomach, i quit using it because my lower right side was hurting and it hurt to breath in, i thought i pulled a muscle, but after using it for an hour, both sides of my stomach are sore and it kind of hurts when i walk, i did not know it would shock you, but i have been shocked by touching it. I am wondering if anyone else has used this and experiencing side effects