It's normal part of being pregnant. Something about more blood flow enlarging capillaries,veins, etc that causes headaches. You can take Tylenol.
I get them every day, same time, also 15 weeks. I drink a cup of soda and it instantly goes away. Tried Tylenol but it didn't work for me.
I'm 15 weeks well and get them almost every day, I have my husband rub my shoulders and upper neck and they go away very quickly. Tension headaches are very common during pregnancy. A rice sock works as well.
I've been getting headaches too. My dr said to increase how much water I'm drinking and trying smaller more frequent meals instead of 3 large meals. Seems to be helping some.