Girls, anyone had a headache during pregnancy? ? At 15 weeks, it's bee…

Girls, anyone had a headache during pregnancy? ? At 15 weeks, it's been three days now that my head is constantly itching, and after washing, the itch doesn't go away. Dandruff isn't present either, but there's no seborrheic dermatitis either ? What could be the reason? Because I can't even stand being in crowded places anymore)))