Welcome
Sorry you have TOS. It's no fun.
Being a mother of two and three is a hard job. I'm wondering if you have family support to help you out.
On delivery, may ask about options, because if your scalens and pecs are involved, straining is not going to be...
...I don't have a word for that thought.
TOS is tricky to treat. You'll have to explore your options.
Getting good help to start out with is hard to get. So be patient and ask questions here and there and everywhere.