Headaches in your 1st trimester can also be a result of a those wonderful pregnancy hormones. I had headaches in my 1st trimester & didn't want to take meds unless I absolutely needed to. Sometimes putting ice on the back of my neck worked, but if I couldn't stand it anymore, I would take one Tylenol tab.
I had headaches all the time during my pregnancy. Tylenol is the safest pain relief to take no ibprophine motrin or exedrin not good for the babu
It is for some people. It also happens if you were used to drinking caffeine and have now stopped.
Be sure you are drinking enough water. Dehydration can cause headaches as well as preterm labor. You should be drinking nearly a gallon of water a day.