I would say so. Odd they let you go on your own but maybe they didn't want you to get charged for an ambulance ride?? Well I am glad you went to the ER. Do you know why it was so elevated? Were you in afib or some other rhythm issue? 200 at your age seems extremely high. I hope you are doing fine now.
200 at any age is to high, way to high! Yes, you should have gone by ambulance. Was this in the US? Was your rate restored to a more normal level before driving to the other hospital? That still isn't an excuse though.