Lots of rest (try listening to some relaxing music.)
A relaxing bath with bubbles in will do wonders for your headache and also relax you.
Try to avoid any kind of drug while you are pregnant.
If you often have bad headaches tell your doctor or midwife and they can advice you on what to do.
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Computers are incredibly fast, accurate and stupid. Human beings are incredibly slow, inaccurate and brilliant. Together they are powerful beyond imagination. - Albert Einstein