popo green

hi , my 1y2m old son fully bf . 2days ego dia kena nappy rash sbb sehari dia popo about 6x . tapi semalam nappy rash dia getting better but still popo about 3x ,so far for me normal for 3x tukan .but today mommy notice yg dia popo 3x cair mcm cirit and green colour . is it normal or do i need to check with doc ?