Headaches

I am currently 15 weeks and this is my first pregnancy. I have been experiencing headache since few weeks ago. It happens almost like everyday early in the morning like 5am/6am even before i wake up. The pain will be starting from neck and all the way up to my head and like those squeezing kind of pain and sometimes is really unbearable. The pain will last for few hours or even half a day before i start to feel better. Any mummy experience this? And remedy to cure this? #advicepls Thanks.