Hay, alam ko yan mama, totoo na super sakit ng likod at tagiliran during pregnancy, lalo na around 4 months when baby's getting heavier na! A few of us tried prenatal massage kaya tumulong, plus yung proper pregnancy pillows talaga game-changer para sa gabi, at important din mag-stretch gently or ask kung pwede ka mag-prenatal yoga. But since it's causing you real pain, best to check with your OB para ma-rule out kung may iba pang cause, kaya they can give you safe options para sa pregnancy, sometimes it's ligament stretching lang pero better safe talaga! Kaya mo yan, mama, ang third trimester pa lang yan!