My Daughter Takes Self Defense Classes , They Were Doing

My daughter takes self defense classes , they were doing drills tonight and she got punched several times very hard in the chest by a grown man . My daughter is 15 and weights 152. She had a protective pad but it still knocked the wind out of her . She is now complaining of slight chest pains , although can breath just fine , and stomach pains . Should I take her to the ER?