Yeah it is. It can be a lot of things... Sometimes its hormones, food smells etc. Im 17 weeks and get them at least once a day. Just let ur dr know. They can usually help somehow.
yes it can be a common side effect of pregnancy and its usually due to the hormones, but make sure your keeping yourself hydrated with plenty of water as being dehydrated can alsoi cause headaches
Yes headaches are normal. With all the hormonal changes it can cause you to have headaches also, high or low blood pressure from the pregnancy, and of course the increase in the volume of blood can cause headaches during pregnancy.