I have constant post nasal drip tickle cough till i throw up & indigestion at night and feel like i'm going to throw up too. gerd? cold? 320lbs pcos

Allergies: You likely have Sinus drainage likely allergies .your post nasal drip is causing all the cough .

Post nasal drip: Post nasal drip can cause cough and can also cause or contribute to indigestion at night when the drainage is being swallowed. Things that may be helpful for controlling the post nasal drip include antihistamines and/or steroid nasal sprays. You may also have GERD, but if you have only had the indigestion and nausea since the post nasal drip started then it may be causing these symptoms as well.