For the last two weeks l have had this cough that has been driving me nuts! l have no other symptoms of a cold.Some times if l cough hard enough l get fluid in my mouth and if l spit that out it looks yellow (Sorry if l just grossed any one out)and it gets a lot worst if l lay down which makes going to sleep hard.

since u had a cough that long l would go to the doctors. yellow or green mucus indicates an infection of some kind. u most likely have bronchitis. here r the symptoms of bronchitis:

A cough, which is the main symptom of acute bronchitis. It may be dry at first (does not produce mucus) & after a few days may bring up mucus from the lungs (productive cough). The mucus may be clear, yellow, or green. Occasionally, small streaks of blood may be present.

A mild fever, usually less than 101° (38.3°). A higher fever may indicate pneumonia.

A general feeling of tiredness.

A sensation of tightness, burning, or dull pain in the chest under the breastbone that usually is worse when breathing deeply or coughing.

Whistling noises (wheezing) when breathing, especially during physical exertion.

Hoarseness.