belly button issue

so my 6 year old said her bully button itched and whatnot. So i took a q-tip amd cleaned it out. It smelled. I tried to look inside it by spreading it a part and it had white stuff in it like it was crusty, but it is hard to tell since her belly button is small.she is saying it hurts. Any idea how to finish getting it cleaned out without her screaming and crying at me?