Man, in Australia I had a very different experience for a much worse situation.
I had endocarditis, a heart infection. It was a bacteria called Streptococcus Sanguinis, a common mouth bacteria, which had gotten into my bloodstream probably through me biting my cheek and found its way to my heart. It then proceeded to eat a heart valve and spread to my lungs. I found all this out after gradually getting sicker, finding myself unable to breath, then having sudden oral thrush (a classic sign of immune failure). I drove to the hospital and parked then walked to the emergency room from the carpark about 30 metres (95 feet) away. It took 4 stops for breath to make it in.
The doctor listened to my left lung, made a face of "Oh dear", listened to the right lung, "Oh dear again", then listened to my heart and had a slightly wide eyed moment. Not the response you want. They could hear my heart was working overtime, running at about 140bpm while resting in the bed. It turns out I had about 75% regurgitation, meaning to get one heart pump worth of flow my heart had to do four pumps. Still, I was quite fit, so I was able to walk and talk etc, but my O2 was dropping, pushing down to under 90% which is not ideal. I had all the diagnostics including quite a few xrays, ct scans, ultrasounds, and similar tests. Lots and lots of blood tests (several a day for about 2 months) along with specific testing for what the culprit was, what antibiotic resistances it has, and therefore which antibiotic would be best. I had open heart surgery and got a synthetic valve along with removing the infected valve and clearing remaining junk (bacterial lumps which could hold bacteria and potentially start a second infection later). I got flown across the country and back for the surgery and had over 2 months of hospital stay with 24x7 care and feeding.
Total cost to me was what I spent at vending machines.
The situation in the USA is insane and needs to change. The only major country with privatised health care and the only country that thinks it is normal to have people face medical bankruptcy.