Quilt it and go with it. I'm working on a quilt and have a particular block of it made incorrectly from what the pattern called for. After making 32 of them and THEN realizing it was wrong, I decided that is what makes a quilt a quilt - sometimes it's the mistakes that make the quilt.
We make mistakes, we learn, we go on, we make more..... it's the life of quilting and I love the freedom it gives! Enjoy!