Could this be acid reflux?

[Chook498]

For the past year i've been experiencing symptoms that no doctor seems able to explain! I'm thinking that it might be some form of reflux, though i have not experienced heartburn. The symptoms seemed to start around the same time i went on the birth control pill, although i'm not sure if the pill was a direct cause. I have heard that high levels of estrogen can increase reflux. I've been off the pill for 10 months, with no change :( here are my symptoms:

- post nasal drip
- excess mucus/phlegm in throat (sometimes blood in the mucus when i spit it out)
- Gross stale taste in mouth
- Constant need to clear throat
- difficulty breathing through mouth at night (I have to breath through my nose...but this only occurs when I lie down)
- sometimes get mild hiccups directly after eating (doesn't happen often though)
- recurrent mouth ulcer on soft pallate, which appeared when all the other symptoms started
- Sore roof of mouth, especially at the back
- occasional tonsil stones (tonsilloliths)
- Bad smell (kind of like chemicals) that comes from my nose

Could this be acid reflux?

Thanks so much for your help :)