Am I losing my mind?!?

Yesterday, I went to Old Navy with Ethan and Levi. I went through the checkout, walked out the store and realized that I had bought two swim suits for Levi by mistake - I had forgotten to put one back after I had decided which one I wanted. So, I walked back in and returned it. We left for a second time when I realized that I hadn't bought the jeans that Ethan had JUST TRIED ON! So, went back in and got the jeans off the rack and went through the check out again! I went through the check out THREE times! I know they thought I had lost it!