Holy Pressure, Batman!

Hey ladies! I'm 36+4 and I had the most uncomfortable night last night. Wondering if anyone has had these symptoms....
Woke up to pee for the 4th time 🙄, and when I got back into bed I had this enormous pressure in my chest wall.  It felt like an elephant was sitting on top of me. I tossed and turned and the feeling eventually wrapped all the way around my upper back and it felt like I couldn't breathe or talk. The only way I could breathe was to sit upright. 
I took two Tylonol and eventually dozed off sitting up.  3 hours later I tried to lay down to sleep and just about had a panic attack cause I Couldn't breathe the tightness was so bad. 
Talked to my dr and she said next time it happens go right to L&D to be monitored but I does not sound like a normal pregnancy symptom. 
Has anyone else had severe pressure in their chest/ upper back!? Feeling better this am, and Baby is moving a ton , so that's a great sign.