Has anyone woke up with a tight chest after vaping the previous night? There are times where i can't sleep and i vape for a bit right before i sleep. Then sometimes when i wake up i get a tight chest. Is that normal or am i allergic to pg? I've always wondered why this is happening. It doesn't bother me nor that it's a really bad feeling. It's just an odd feeling to me. I vape with 70 PG 30 VG at 4.5-5.0 Volts on a 3.0 ohm Carto