Re Rituxan Infusion Treatment For RA. I Have Had The

Re Rituxan infusion treatment for RA. I have had the 1st infusion. Did well during and thru the next 2 days. However, since then, I have swelling of joints and pain, as if I were not on anything at all, and certainly worse than how I felt prior to. Pain level around 7, but I am very stiff and am not "warming up" and getting loose during the day at all. I was taking 1 Mobic & 4 grams prednisone prior to infusion and continued after. Is the above a normal reaction for starting this treatment and does this get better?