what kind of flu were they talking bout

This tx has been the worst so far. Ate, drank and rested the same but effects are way worse. Tried to sleep or lay around all day yesterday and today. Can’t sleepBesides being sick my legs and hip hurt to the point of nausea. It always seems to be on the side I do my shots. Hopefully I can get an appointment with the acupuncturist tomorrow. It helped last time.Instead of this, I think I would rather have the flu like symptoms they warned me about.