Good day! I'm having my first pregnancy, thank God there was no toxemi…

Good day! I'm having my first pregnancy, thank God there was no toxemia, but lately I have frequent headaches and constant temperature of 37 (maximum 37.5). There are no symptoms of viruses or flu. I read that it can happen during pregnancy, but it still worries me. Could you share your personal experience or advice? I'm afraid to take medication, but the pain is unbearable. Twice I had such severe pain that after it, my head felt like water was being thrown at it (not nausea, but a sudden urge to vomit).