Mommy guilt

Today was not a good day with V. She was super slow getting ready for school this morning, so I had to fuss and hurry her along all morning. After school, she accidentally erased a file on my computer and got my overhead transparencies all wet. It's not completely her fault - she has a stuffy nose which is making her a real grump. She is NOT a nice sick person - I wonder who she gets that from (Tim, don't say a WORD!). :) However, when we got home, I had just had enough. She had argued and been sassy and complained and fussed. I told her she needed to cut it out or she was going to have some serious consequences. She continued with her lovely 8 year old mouth so....consequences happened. She didn't like them, she didn't want anything to do with them, and what happened next wasn't pretty. Needless to say, Mommy won - consequences happened, but then later the "I should have" or "What if I had done..." start creeping in. I think moms beat themselves up so much and worry so much about being "the best" - I know I am guilty of it. Right now, V is tucked into bed, hopefully asleep and getting some rest, and I am sitting here wondering what I could have done differently. I know she needed some consequences - her behavior was awful - but yet I feel bad for giving them to her. Does anyone know what I mean? Thankfully tomorrow is another day and hopefully it will be better than today.