allergic rhinitis
"So allergist gave me sample, have been using Flonase.  The after taste is awful but worse is the subsequent coughing, nausea with vomiting shortly afterwards, slight headache.  Did not realize extra tiredness was also from this.  It does feel like the nasal passages are opened up more but the morning porcelain throne is not worth it. And no not pregnant! Ain't possible. Definitely will inform MD."