Ay mama, I know na nakaka-worry especially kung hindi mo naranasan sa first two pregnancies mo! Pero dahil araw-araw na talaga at may pattern pa (palubog araw), please see your OB na lang para ma-check nang maayos, hindi ako comfortable mag-guess kung ano yan, kasi bawat pregnancy talaga is different. A few of my mum friends experienced headaches during pregnancy pero kailangan din nila i-rule out kung hindi lang dehydration o blood pressure changes, kaya doctor visit talaga ang best bet para sa peace of mind mo. Sending you strength, mama!