Anxiety when going out

3 weeks ago I fainted while on my own in a shop. Although they found out why and I am now clear of that I can't go out by myself without getting anxiety that it will happen again.

I can't drive because I don't want to put anyone at harm if it happens and can't go to work because of anxiety and other health issues. I have to constantly be with people when I go out and can only be at home on my own.

Had anyone else had a similar experience? I'm hoping it goes away once baby is here and my body goes back to how it was before pregnancy.