There are many ways to boost your immune system, but the only proven way to reduce the viral load is with ART. Since your CD4 count is this low, I suggest you start ASAP, don't wait until you end up in the ER.
A generally healthy lifestyle will be good for your immune system - you know, good diet, vitamins, exercise etc. This benefits everyone, and is probably especially important for compromised people such as yourself. I wish you all the best.
u need to take a break, this post was originally in the HIV support forum from where it had been moved.
You probably should be posting in the "Living With HIV" forum. The only way to boost your immune system is ARV drugs. I hope that you are also taking antibiotics.