The reason anyone would come down with these type of problems is due to imbalances within the body. Restoring a foundation for health through the Plan is a great way to start bringing balance back to the body , so that it can regulate everything. Obviously, your immunity is low and 70% of the immune system lies within the intestinal tract.
As far as the antibiotics go, I can't make that call from here.

i would follow the Plan to reset the system.