Natural immune boosting and natural painkillers/fever reducers for early pregnancy?

I'm wondering what's safe to take to help boost my immune system to help clear this virus asap? My daughter's had hand foot and mouth for the last week and now I'm in the early stages of it. 😭 My throat hurts, I can't eat, sleep, it hurts so much to swallow. I'm forcing myself to stay hydrated for baby, but I'm just so run down. I want to stay away from tylenols and such. I've been taking honey for my throat and keeping up with vitamins and trying to eat foods with lots of vitamin c, but what else otherwise? Can I take garlic? Activated charcoal? Any other natural remedies to boost my weakened immune system? My husband's working out of country so rest is not an option with our 2 year old.