Ay, sciatica during pregnancy is super common kaya hindi ka mag-alala, pero one week na talaga yan so best to check with your OB para sure kung ano exactly ang causing it and get proper advice, sometimes it's just the weight and position, minsan kailangan ng physical therapy or specific exercises para relief. In the meantime, try to rest as much as you can, avoid standing or sitting for long periods, and some moms swear by sleeping on their side with a pillow between their knees para less pressure sa sciatic nerve. May prenatal massage din na helps, or ask your doctor kung pwede ka mag-prenatal stretches, importante na guided kasi pregnant ka pa lang at need mo protect the baby. How's your sleep naman, uncomfortable ba talaga or tolerable pa rin?