Probably our car. It's a great car, I spent weeks researching the perfect car for us. I love it and I'm grateful every time I drive it, but we bought it on credit and it's way out of our price range to buy. It'll take us about 6 years total to pay it off.
I still understand my decision at the time, but it was driven by a specific chain of events that made it make sense, and in principle I'm against buying a car on credit, just buy an older reliable car you can afford.
Since you're in the US I imagine my method won't apply to you, but just in case, or for other people reading: in my country there is a phone number you can call in situations like this. They have doctors, nurses and specialists on call, initially you talk with a nurse that asks triage questions once you've explained your problem they give you advice for home treatment, if relevant, or send you to the correct urgency level care, including already sending the information on the triage questions to wherever you are going.