Terrible twos

Yesterday when Katelyn woke up she seemed like she was in a good mode. Once I had to get up and get Alex his breakfast it was all over, she wanted me to wrap her baby up the second that it slipped out of the blanket, or she would just yell at me. Where does she get that she can talk to me like that? I mean I don't yell at her and wine at her to do something in two mille seconds, even though I want to sometimes. Then I gave her some yogurt for her breakfast and she through it all over the carpet instead of saying no thank you, she got a time out. Next she wanted to go outside so we went out there and I uncovered the sand and water table and she was so mad because she thought that meant that she couldn't do bubble too, that upset me so much I gave her a spanking. The worst thing was when we ran into target really "quick", I had to take her out of the cart because we had too many things in there and then Alex dropped my keys and we couldn't find them for a half and hour. The whole time I was looking she wanted up or wanted to take everything off the shelf, I got so angry at her and I could only carry her for so long and then she was too heavy. When we finally found my keys we left and I said "I'm sorry Katelyn for being so upset with you and not being more understanding" and she said "I'm sorry too mommy", I think that I almost cried thinking that she felt that she needed to apologize. Ever had one of those days, please share so I will feel better.
Emily