Small ERs stabilize you and then can transfer you to the appropriate facility. They can also sometimes find you a doc who can see you sooner.

I would hesitate to ride a train to ER. That kind of negates the actual "emergency" part of the deal in the eyes of the ER staff. It also is risky if you are having a lot of trouble.

In any case, it sounds like you are in need of more help sooner than later. If I were you, I'd formulate a plan and act.