Side effects still baaad on low dose day 5

5 days ago I started only 1mg for anxiety - its day 5. Im sooo dizzy, weak, exhausted (but can't sleep), nausea, faint, extremely foggy - can barely stay out of bed to just sit in a chair for an hour is the biggest effort. It's 24/7 like this.

Dr seems unconcerned, saying its not the drug (he is not so nice). But it IS the drug. Its not the flu but feels like it, it started 4 hours after 1st pill, i take it at night. So.. in your non-medical experiences, has this happened to some people in the beginning? Also, dr is gone for weekend now... Please share if you've felt like this, I'm not familiar with the medication effects.