I know exactly how you feel. Sometimes it is kind a difficult to keep track of questions and revisit to check the OA.
On the other hand, you will at least have a second look at the question and read through some discussion to how other people think about the same question. Also you could compare the mistake that you made (if any).
Moreover, some questions don't have an OA/OE, and that's why they are posted and discussed here.
"To dream anything that you want to dream, that is the beauty of the human mind. To do anything that you want to do, that is the strength of the human will. To trust yourself, to test your limits, that is the courage to succeed."
- Bernard Edmonds