Welcome at HCM.
I have read your question.
It looks from your details that you are having pain at your both shoulder region & had an accident one yr ago.
Looking at your details ,it looks that there can be some problem with your nerves supplying your shoulder area.The nerves can be compressed at neck region.This can be due to disc prolapse
after accident which is compressing nerves supplyng to shoulder area.
You may evaluate it by having a MRI scan of cervical spine
If it comes true then this can be treated by good analgesic
,exercises & physical therapy
At present you may have a mild analgesic like advil
& should do warm fomentation for relief.
Hope this all will help you.
With best wishes.