@Ki'Andra - Unfortunately there isn’t much research out there for individual drugs and their subsidiary on pregnant woman. So best to be cautious atleast that’s my personal recommendation.
@Ki'Andra any mucinex formula is considered category C. I would recommend reaching out to a pharmacist to learn more. Generally, best to consult medications with an experienced pharmacist over a doctor. https://www.drugs.com/pregnancy/guaifenesin.html
@Justina mucinex nasal spray is know to cause miscarriages or regular mucinex liquid or pills? I haven't heard or read anything about the nasal spray
@Jessica Harvey - hope and pray you feel better soon!
I wish I had advice but I just suffered horribly through my pregnancy. Nothing I tried help and I woke up choking almost every night. Elevation helped a little. If it makes you feel any better it went away pretty quickly after I gave birth. Hang in there mama. I know it's absolutely miserable.