Hiya, I was patient number 7 at my London hospital in 2017. , do you mean your 1st dose which is 5 days. Not going to lie its tough , your immune system will slowly die in the weeks after infusion, when you are at home recovering. I had the rash, bad headache and your heart races , on my 1 st week. It does settle down honest, round 2 is only 3 days was alot easier. Then the monthly bloods for 5 years , you get used to it honest ,did it help me, I would say yes, its very effective. The diet they call it the pregnancy diet for a few months after ,even no ice cream! Good luck with your treatment