I've had all those issues too except neck/back pain. In my worst periods I feel the same way, that I don't want to leave the house because I feel too bad. The anxiety, in turn elevates my heart rate. And then it seems like any little change in my body I start to hyper focus on and worry about. But it's the dreamworld, dizzy, light headedness that has me frustrated.
How long has been on Klonopin for? It's important to know that these drugs are not miracle drugs and a cure all to anxiety. Also, what works for one person with anxiety might not work with another. I've been climbing in dosage on Prozac for the past couple of months and it's only been a mild difference in terms of anxiety. Some aspects have gotten better, others have stayed the same, and some even seem worse. The only time I ever begin to feel better is when I stop worrying that it's something else and accept that it's anxiety. Some days are either than others though. You should encourage your boyfriend to come on these forums and talk with others who have anxiety. This forum really helped me just by talking with other people who could relate to how I felt.