living with acid reflux and sinus

Hello everyone I'm new to this site and so glad i found it hopefully someone out there has some anwsers for me. I have been suffering for 8months now, started out with terrible sinus & allergy's then as I went on my allergy dr. and gastro dr. said it also could be acid reflux? They also said that most likely the acid is going into my sinus since I have allergys so bad. I've been on Nexium 40mg. now for about 3 wks and it does help but after that wears off I start getting that drainage something aweful at times clearing my voice and at times I feel like I am going to suffiociate can't breathe!!! Also take Atarax for the allergys and bendryl etc. So if anybody on this site can give me advice it would be most appreciated because my nerves have JUST ABOUT had it! Thanks for listening.  Linda H.