If by your belly feeling tighter, you mean less flabby? Yes, normal. Or you might mean less bloated. Also normal.
For blood perssure, that might depend on a few other things like sodium (that might be a point of contention on this board). I'm glad to hear your blood glucose is going down. It should continue to improve as you continue to eat a primal diet.
It is critical, especially given your apparent health problems, that you eat naturally fed animals. I'm sorry. I know it's expensive. Still, there is nothing worth spending money on if not your own health.