I'm at 14 weeks. Had headaches too. Sometimes real bad... was worried so went to our family doc and check it out. He say its normal and is due to hormones changes becoz of my pregnancy. He recommended me to rest more(gave me 2 days mc..kekeke..), refrain from prolong using of computer(glare) and to close curtain n sleep(will help sleep better). I followed his instructions and it did help. I slept so soundly n dreamless! He did prescribe light panadols but advised me try not to take. It would be best to take ample rest or just try to tahan.