Hello,
I have had 2x EWCM before, not sure if it means 'oing' twice though.
Now I would definitely get the pain checked out, I think shoulder pain can also be linked to ectopic pregnancy - sorry not trying to frighten you, but just get it checked
My friend had this horrific pain on and off which she thought was haemoroids turns out she has endo and it had never bothered her til after the birth of her first son! She wishes she had the pain checked earlier!
Goodluck sweetie!!