Ok so last Friday I was witha friend and pulled out his vape pen and asked me if I wanted to use it, I said sure and I took one drag or puff or what ever you call it and then handed it back to him. Later that day I started feeling an occasional chest pain. I also felt a weird sore/swelling in my throat. We'll now it's Wednesday and it still hasn't gone away yet. The juice in the pen had no nicotine, and it was a mix of PG and VG. I this even vaping related at all? Has this happened to anyone else? I've been drinking lots of water since it started happening. Any advice?