aww we all have off days :( I know it sometimes feels very stressful out and about but it gets better.
When my two main mindees started, ds was a year and they were nearly 2 - I had a double buggy so they had to take turns walking. I don't have a car so they walked EVERYWHERE! I had straps, reins, slings the works.. it was so stressful. Now I just have the single buggy for ds (he's nearly 2) and they just walk and I can't remember it being awful!
Plus when they started I took them to playgroup and one got bitten badly by another child. Was horrified. The mum asked what the one bitten had done to pee the other child off and it was probably his own fault anyways!
Yesterday she accidentlaly slammed his fingers in the door.. by 1pm she tried to blame me.. you get days like it. Don't let it get you down!