If you have large breasts that make you uncomfortable at night, you might want to try wearing a bra while you're sleeping too. Occasional headaches trouble many women in early pregnancy. The cause is uncertain, but like so many other discomforts of the first trimester, changes in your hormone levels and blood circulation may be factors. Other possible causes are the stress and fatigue that often accompany the emotional and physical adjustments to pregnancy. If you suddenly eliminated or cut down on caffeine once you learned you were pregnant, this change may also cause headaches for a few days.
Dizziness is common in pregnant women and can result from circulatory changes during pregnancy.
Stress, fatigue, and hunger can also be causes of dizziness or faintness. A more serious cause may be an ectopic pregnancy , especially if dizziness is severe and occurs with abdominal pain or vaginal bleeding. For this reason, it's always a good idea to tell your doctor about this symptom. Although headaches and dizziness at this point in your pregnancy may be nothing to be concerned about, call your doctor right away if these symptoms are persistent or severe. Migraine-like, throbbing headaches or fainting spells should also prompt you to call your doctor immediately.