Upon another manipulation, the pain ceased. In the early morning hours I'm awake with pain across the middle of my back and trying to find a position to ease it. As soon as I get up out of bed, it stops. I'm much better today, although feel a very mild wooziness. This is making me think it is a neck problem.
Nothing is ever just ONE thing, unfortunately.
It IS 'possible' that something the chiropractor did brought on the neck pain. Yes, neck problems and vertigo can go hand in hand. In fact, vertigo is not to be taken lightly as it can be associated with other vertebrobasilar problems. Rare, but can. The early morning symptoms you describe indicate that it is an alignment problem.