The flu is very difficult to cure.
My family (in Toronto) said it takes an average of 4 weeks to recover.
Her clinic is always full of flu patients.
Rest and drink a lot of water.
If you use public transit to work, that is the place full of flu and germs.
Maybe you should protect yourself by wearing a mask, gloves, have a bottle of hand sanitizer in case you need it (e.g. you touch anything inside the bus).