Baby boy busted his lip in three places. There is a piece of dirt/rock under his skin in one of the cuts and I can't get it out. Do I just leave it alone and it will come out or should I try to squeeze it out to avoid infection? I tried to push it out but nothing works, it's really stuck there. Waiting on a call back from his Pedi's nurse but thought may be someone on here knows?? TIA!