Thank you for your query.
If the pulmonary specialists have advised Acyclovir
, you have to take it.
It is relatively safe in pregnancy
Also, the high liver enzymes and low potassium could be a complication of the pneumonia
Your treating physician should be investigating you for the liver and the potassium, and treating you for the same.
If not, please consult a Physician at the earliest.
Deranged liver enzymes could indicate cholestasis
which could prove fatal to your baby.