2 days of lyrica, (pregabalin) nighttime chest pain. 2nd shortness of breathe, felt throat had closed, felt like passing out O2 97%, pulse 13O. anxiety or <3 attac?

Likely panic. Pointing towards panic attack. If symptoms seem to be related to initiation of Lyrica (pregabalin) treatment worth letting your prescriber know and discontinue Lyrica (pregabalin).