Girls, hello everyone! I'm 13 weeks pregnant and my head is very often…

Girls, hello everyone! I'm 13 weeks pregnant and my head is very often hurting. I don't take any pills, I'm afraid. I have to endure the pain. This is my second pregnancy. With my first pregnancy, I didn't experience such things. Since my second one, frequent headaches and nausea. Is it dangerous for the baby? I had a prenatal checkup and everything was fine.