With my family (and a couple friends who live about 600 miles away), this winter has been awful for viruses. Both my kids and I took antibiotics after having bad colds/sore throats for about 3 weeks. They didn't really help. I think its viruses. But all of us have been sick in one way or another all winter long. At first, I thought it was because the weather was so mild. But for several weeks now, its been around 0 degrees alot, and we have several feet of snow on the ground, and we're still feeling yukky!
I have had stuffiness for about 5 weeks, and now I'm nauseous and dizzy. My daughter has had one sore throat after the other, and now she's nauseous too! We started her back up on her allergy meds, and that didn't help either.
I don't want to discount the possibility of silent reflux for you, but keep in mind that the viruses this winter seem to be really persistent.
Be sure to drink alot of water, use a humidifier, and take Mucinex twice a day. Its Guaifenesin, and it thins your secretions.
Actually, I've been doing all that, and I'm still stuffed up!
Be sure to do all the anti-reflux stuff, like avoid stuff like chocolate, caffeine, acidic juices and tomatoes, etc. Don't eat within 4 hours of lying down. You could even try some over-the-counter reflux meds, and see if that helps.
But mostly, I think we will all eventually feel better when spring gets here! (until our allergies set in!). Hang in there.