I'm just getting over my swine flu, but...?

I've had the flu for the past few days and the doctor prescribed Tamiflu and I've been using Tylenol extra strength pills, but I've had this headache that makes me feel like I just had a psychedelic mushroom or something. I'm conscious of what's happening around me but it's just like everything feels really weird. It's just been really weird with this headache. My doctor says it's just part of the flu, but it isn't going away as the other symptoms are. Any advice?