this thread is pretty old, but my carpal tunnel didn't go away until about 6 weeks pp and I COULDN"T hold my baby
Seriously. My arm was so tingly and numb, I definitely couldn't do a 45 minute nursing session.
That said, I gave up the boppy pretty quick after that. It became more cumbersumb than necessary.
And I didn't master side lying until about six weeks either. The boppy (or some sort of "prop") was practically necessary for my tingly and numb arms and wrists.
Somehow I had it in my head that symptom would disappear immediately at delivery. DANG!