Is brainfog and fatique the next days after a immunoglobulinshot a good sign to continue? Ordered 2 bottles to try. I can order 6 more but i don't feel like it's going to help. Is it suppose to make you feel worse and then better? Or am i just teasing my body again for nothing First time 3ml no side effects. Second time 4 ml and brainfog and couldn't talk very clear. But if i just stay in my baseline and be very very Mindfull about what can trigger a pem and don't bother with medicines and supplements. Rest 80% a day i can feel happy all day. Let my mother do the grocery's. Hope after a year of cfs monk lifestyle i get some improvement.