The feeling of numbness and tenderness around your จิมกระป๋อง and vaginal lips is not unusual, however, it could signal to take a break from your toy time.
It is possible to develop an aversion to the toys you have therefore it's best to avoid using the toys often or, in the alternative it is possible to play with various toys. So long as you don't develop an established pattern, but instead experiment, you'll be good to go.