Why doesn't everything taste as it used to? Moreover, I have such a foul taste in my mouth.
It is called dysgeusia, and is a common condition. It is probably caused by hormones, which can alter or eliminate taste. Some women experience a metallic or bitter taste, or lose the taste for certain foods. The good news is that this condition usually disappears during the second trimester. Try to add lemon to water, suck on citrus drops and drink lemonade. Also use citrus juice or soy sauce in your cooking. If the metallic taste is overwhelming switch to plastic dinnerware! And brush your teeth often.