I was concerned about this last year since I'm already barely functioning and asked my doctors a lot about it. They said my inflammation could go up (a problem for me in particular) and there could be some uncomfortable symptoms for a little while, but if I got the flu inflammation and all the symptoms would be so many times worse that it's absolutely not worth the risk of skipping the shot. And after some research to double check what they said, I absolutely agree. I'm just getting old enough to start thinking through some of these decisions for myself and getting the flu shot each year is a decision I'm very confident in. I hope this helps
P.s. I also suffer from asthma so the FluMist option is a no go for me, I have to do the injected vaccine.