Bitter taste while eating?

For the past few days I have had a bitter taste in my mouth while eating. I have had this before and it lasted a few weeks before. It is impossible for me to be pregnant so that's not it. I also floss and have a clean tongue so that's not it either. Does anyone know what could cause this? I do have CFS.
Answer:
No you had a BJ, how do you forget?
:-)

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Is there any pain along with the taste?

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Have you eaten pine nuts recently if so check out all the answers on here about pine nuts, it is incredible.

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medication can cause it-but see the sites below on the possible causes and treatments for so called CFS

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Possible causes

Gastritis
Gastroesophageal Reflux Disease
Heartburn
Jaundice
Lead poisoning
Postnasal drip
Scombrotoxic fish poisoning
Tooth abscess

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It may be indegestion, IBS or heartburn.

Check with your doctor in case you have an abnormality in your tubes.

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