Roxie
I had IVIG at an infusion center. I had 5 infusions over 10 days then, one every month for 6 months. Mine went well. I had no problems, other than the sticks. I was so hard to stick they put a midline in for the first 6 rounds...
Now, after that I ended up with 16 weeks of IV steroids at home by self infusion thru a PICC...that I will not do again...no more steroids unless I am dying. In my case, the steroids were not beneficial....Eh, but that is just me.

Every one is different....keep that in mind.