Both of mine didn't like the left either. They'd only nurse the left on occasion during a growth spurt or something when the right was completely out for a little while!
It just means you'll be a little lopsided for a couple of (I'm guessing) years, but don't worry, a year or so after you wean they'll become relatively close to the same size again, and be equally floppy!
Enjoy your babymoon! I am so glad you didn't circ! Yay for intact baby boys!