My poor 10 week old baby girl had her first round of shots 3 days ago and last night she started pooping a lot. It got more runny and frequent through the day and the poor thing has some major diaper rash. I'm putting desitin max strength on her. She doesn't have a fever and she has the same healthy appetite as normal. But I just feel so bad because when she poos, it hurts her. She just screams 😫 I'm thinking about letting her little bum just air out when we wake up tomorrow.