@MawB2 I admit, I probably didn't deal with it in the best way, that's why I put it here in AIBU.
At the time, I wasn't rational, I'd lost the plot as I have PTSD. I need some therapy, but what with covid it's not happened. I've admitted, I screamed and shouted- I was terrified because of a previous event and probably over reacted.
I do feel bad for the dog, it could have thought I looked nice to play with and knocked me over because it was over eager? I don't blame the dog, if the owner had been attentive to the dog, they could have called the dog back rather than "barking up the wrong tree".
I did go for a walk in daylight today, just as the kids were coming out of school as I thought there would be lots of people about and less chance of dogs off lead.