Hi Sonairose,
Typically my only symptom of reflux is just my chronic cough.
According to my doctor, and the research I have done on the internet, there are four main things that typically cause a chronic dry cough:
allergies
post nasal drip
acid reflux
asthma
I have all of the above. For me it took finding something that works for all at the same time.
As for the acid reflux causing the cough, it is certainly a possibility and more common than most people know. It took me off guard when I was first diagnosed years ago because I always assumed that the cough was a result of just the allergy and sinus problems I had. It took treatment for the reflux and the tests that followed for me to realize just how often my cough was caused by reflux. By the way, my chest x-rays have been negative as well. I usually end up getting them done several times a year because of my cough. I have times when I can't tell what is flaring to cause the cough--the reflux, asthma or an infection. I have the same coughing symptom for all.
I would suggest talking to your doctor about this. There are also some good OTC reflux medications that you could try first.
Other things to try: modifying your diet--no spicy; low fat; avoid chocolate, caffiene and carbonation; no tomatos or citris, etc... (There are some good threaRAB on here that are more specific.) Sleep on a wedge or raise the headboard of your bed 6-10 inches. Sleep on your left side. Wear loose waistbanRAB. Avoid excessive bending.
As for allergies, have you had any allergy testing done? It would be good to confirm if you have allergies. Immunotherapy has helped me tremendously lately.
My husband has suffered with chronic cough and acid reflux for many years. Chest xrays are always negative and it is usually worse in the AM. He is taking alot of medication for high blood pressure, cholesterol, and diabetes. The medications are interfering we think with his stomach acidity and normal bacterial balance. I think my daughter has found a cure for him. It is from vitacost.com and is called probiotic acidophilus. He likes the blueberry flavor. He has been taking it for about 60 days now. What a huge difference. You might also try to elevate your chest when you sleep. The pyloric sphinctor is right above your stomach and that is usually where the acid enters the esophagus. A pillow under the mattress might help. I can only tell you that he now knows when he has the acid reflux and takes the probiotic then. We are no longer erabarrassed by the chronic cough. Hope this helps