Why do I get headaches now that I'm 17 weeks pregnant?

I am 17 weeks into my pregnancy and have been getting headaches when I go outside for walks. Am I more sensitive to the sun? Also, when I do not get enough sleep, the headache stays with me all through the day. Are headaches normal during pregnancy?

Although I'm sure you're finding them annoying, I can reassure you that headaches are not unusual during pregnancy. The number and frequency are a result of the hormonal changes in your body when you're pregnant. Some women have fewer headaches when they're pregnant; others have more. The most common headaches are caused by tension. Your head feels tight, almost as if you have a tight band around it. Being pregnant can make you tense because of all the changes in your life, emotional concerns or physical stress. Avoid stressful situations whenever you can and don't place unrealistic expectations on yourself, your partner or your pregnancy. If the sun seems to trigger your headaches, stay out of it as much as possible. Avoid taking aspirin, ibuprofen and most other medication. If you must take something, take an aspirin substitute. Better still, learn relaxation and massage techniques, or sit down, put your feet up and have a cup of tea. And try to get plenty of sleep.