T/W- stalking

So the other week I had a late docs appointment and whilst I was walking a man started following me. It obvious scared the shit out of me and my heart was racing and I felt jelly legs and I was in tears. 

Fast forward a couple of weeks and I’ve started getting a racing heartbeat and feeling faint etc, having the feeling only when I’m out by myself So I know they’re panic attacks but they only happen when I go out by myself. Even if it’s from the busy stop to home. I’m guessing that it may be from what happened. 

Are there any tips people have for trying to battle this ? 
Im seeing a therapist soon but want some extra advice whilst I wait for it