Even though you got the flu, by getting the flu shot your symptoms should be greatly reduced. The flu shot this year while not 100% effective it is about 42%-47% effective.
I am in healthcare and I always encourage all my patients and everyone I come into contact with to get the flu shot.
Last season 2018-2019 there were almost 1 million hospitalizations and about 80,000 deaths in the USA alone from influenza. This season so far only 15k-30k have died.
If you take care of yourself and follow your Dr's orders you should be fine, provided you do not have any underlying comorbidities.