Is my Home Teeth Bleaching Kit Receding my Gums?

I see other questions on here but none that fit my description. I used a bleaching gel kit(44%) with a retainer three days in a a row until the third day i experienced mild stinging as well as small areas of my gums turning white. I'm assuming because of maybe tiny lacerations on my gums. The next day i had white puss like residue over the areas that were stinging and i was able to rub it off. I think it caused small receding, If so will it grow back? or should i stop and go to a dentist?