My dog scared of bigger dogs

Hi
My 15 months old Parsons Rusell Terrier was chased by 4 dogs bigger than her last week when we were in a park- I didn't see them coming- they were off the lead with a dog walker when they came into the park and she bolted out of the park and onto the pavement. She came to me when I called her .
Since then, if she even sees a bigger dogshe will make to run off and actually did the other day, ran out of the park, but stayed on the pavement and came back to me.
Today I took her to a bigger park, which she is v familiar with and again- even though the dogs were at a distance she started jumping up at me as if to be picked up.
I have pout her back n the lead when I see a bigger dog or sense her anxiety and today I walked her past a few big dogs on purpose wuthout making a fus to try to get her used to them again.
She never used to have a problem with bigger dogs so I am v upset about this.
I am due to have a baby in 2 weeks and canlt move v fast and think maybe my anxiety about potentially dangerous situations is not helping either.
Any tips?

If it was my dog, I would get her round and walking with bigger dogs as soon as possible. Then she should realise that they are ok.

completely agree with this. find some 'safe' big dogs and get her socialising with them. good luck with the baby too!

same, it happened to Louis once, he didn't like bigger dogs after that, but slowly but surely he got use to them and now his big brother 70-80kgs worth gets bossed around by him