Welcome back... although of course I'm sorry your health problems have brought you back. It does sound like you've been through the mill this year and it's barely half over! Many here have reported great improvements after Rituxan so I hope that is the case for you. Some others have reported similar infusion experiences as you too - if you'd like to talk with other Rituxan users you can search through the forums for Rituxan and find a few other threads.
Take care & wishing you better health in the near future.
Take care & wishing you better health in the near future.