Yesterday I Let My Sister Find My True Laugh, It's

Yesterday I let my sister find my true laugh, It's when you cross your arms and lay down when the other person will push on your four arms witch would be right above your heart and you do it till you laugh. But after I did it about 2 times my heart started hurting and it's still kinda hurting and I'm not sure if it's just sore or something is wrong..When I sneeze it hurts and if I put pressure on that area it is painful.