A brief sudden change in a normally constant quantity: a pulse of current; a pulse of radiation. b. Any of a series of intermittent occurrences characterized by a brief sudden change in a quantity.
Some pregnant women experience a metallic taste in their mouth during the early stages of pregnancy, because of the hormone changes. It's also fairly common to crave certain foods, or go off certain foods, and have a heightened sense of smell. Learn more about the signs and symptoms of pregnancy.
While nausea and fatigue are among the most common pregnancy symptoms, some women also experience changes in taste. This is most commonly described as a âmetallicâ taste. If you feel like you have old coins in your mouth, sensory changes from pregnancy may be to blame.