My physical symptoms are those related to anxiety - pounding heart, trembling, hyperventilation, etc.
I can't hold conversations with people at all, because my mind is just racing with anxiety, and the obsessive thoughts are impossible to stop for more than a minute or so at a time.
Last time I think I had about 2 weeks of massive anxiety, then suddenly it resolved, and I was OK.
The fluoxetine does eventually really really help me - I go on it when I experience either depression or anxiety or both - but it takes 2-3 weeks of being much much worse before I get better.
My doctor did give me betablockers last time, so that I could take them when I had things like stressful work calls to do, as those were something I was really struggling with. I still take them occasionally if I have something coming up that I know I'll find stressful.
Next time I go onto Fluoxetine I'm going to talk to him beforehand about if there's anything else he can give me during that first couple of weeks.
I'm so sorry you're struggling, it definitely sounds worth checking in with your GP.