Hi had my wca today, how long until I hear?

hi all i havent been on here since the beginning of the year after my last round of pip and esa assessments.!!
had the esa yearly assessment after being put in the wrag group last year today seened to go ok tho who knows did seem a bit peeved on that question of how far could i walk in 5 minutes i said well not far because i walk slow (have arthritis had an op in march) on my knee anyway that was that then at the end said i got a touch of vertigo though the doctor said take nothing wsnt concerned she seemed to think that i might have to be seen by the doctor abd go through a whole another assessment (this one took hour and half) becayse she says its neurological? Anyone else had this anyway after confirming it didnt impact my day she left it there. 
I went in with anxiety deoression stomach problems arthritis im wracking my mind for if i said the right things i also wrote a letter to the decision maker about my reasons for my mental health now im wondering if that was wise too.