The weakened abdominal wall might be a cause and the pain can spread to the groins and gluteus. The pain is dull.
Place the tape without stretch along the external oblique abdominal muscle and smoothen the tape by your hand.
Place the beginning of the tape to the abdominal wall and stick it on the painful side next to the belly button towards your inner thigh.
Stick the last tape when stretching it to the sides from the middle to the back part of the diaphragm.