Mama, headaches na tumatagal ng 2 days at 37 weeks deserve a check with your doctor agad-agad, ha, dapat sure kami na lahat okay sa iyo at sa baby. It could be normal pregnancy stuff, pero kailangan talaga ng professional assessment, lalo na this close to delivery. A few of my mum friends had headaches towards the end, pero iba-iba ang reasons, dehydration, stress, blood pressure changes, kaya really important na i-check ng doctor mo. Don't worry, likely walang malalaking problema, pero better safe than sorry, 'no? Hydrate well and rest, but please see your OB asap para sa peace of mind. You're almost there, mama!