Oh boy do i feel like a horrible mother!

Just got home from a long train trip from Sydney. The train was packed so we had to stand where that platform thing is where the doors are with 5 other people and our pram! So Lily was both hungry and pooey, couldnt do a thing as there was no room to even breathe! So got home and changed her and she has a red raw bum. It hurts so such she was screaming like full on high pitched screaming. I nearly cried myself. Poor thing. Also, we went to the baby expo yesterday and she must have got way too over stimulated because when we left, that night, she was screaming the place down. Gave her the bottle and after she was screaming again. She must have sucked in a lot of air from crying before so she had a belly ache plus was over stimulated. Think she will be sleeping well tonight.