Do you have a T you can call and tell you don't feel safe? If not, do go to the ER, tell the nurse and the receptionist that you don't feel safe. They have a set of things that they do for you...and they have always been nice to me

It's a good thing to do this self care. It can be very difficult to make such a good decision when you really aren't thinking well. Do what you know to be right... and often it works out quite ok! Sometimes I had to just go sit in the ER "guarded" by a social worker who talked with me and distracted me until the unsafe feelings were gone... when the trigger was worked through... etc.
Go.
If you are still having trouble, then use all of us here as an excuse, tell them you posted you weren't feeling safe and WE told you to go.