Negative ions such as chloride, bicarbonate and sulfate are called anions. That's pronounced 'an' ions. The common electrolytes that are measured by doctors with blood testing include bicarbonate, chloride, potassium and sodium. The functions and normal range values for these electrolytes are described below.
Generally, signs of early pregnancy are more subtle. Hormones due to pregnancy may start to take effect from about 10 days from conception, and the symptoms tend to become more intensified as the level of hormones gradually increase.
About half of pregnant women suffer from both nausea and vomiting, one quarter have nausea alone, and one quarter luck out altogether. The nausea usually starts around 6 weeks of pregnancy, but it can begin as early as 4 weeks.