My swing is fine and I have been taking weekly lessons from a pro. My problem stems from hitting too hard with little or no warm up/stretching which turned into muscle spasms.

The spasms were so great that it forced my ribs to go out of place and get locked up. As I mentioned, with good warmup/streches and by trying to get the "gotta kill the ball" mentality out of the way, I will not experience such problems.