About 3 weeks ago I went to see a weight loss doctor that prescribed me Phentermine 37.5 mg once a day. Lately I have been have real bad gas and burping all the time. Also I have had very painful migranes. Last but not least I think I have heartburn or acid reflux and trouble sleeping because of it. There feels like there is alot of mucus in the my throat and I can only breath thru a little whole in my throat My throat feels like it is hot and on fire. Is or has anyone else experienced this. I made an appointment to see the doctor so I am looking for some detailed answers until my appointment. Any advice would be great. Thanks!