Mama, please see your OB right away or go to the nearest hospital if ang pain ay malakas o may accompanying symptoms like bleeding or contractions, better safe than sorry sa 37 weeks na! Left side pain can be normal (round ligament pain, baby position), pero kailangan talaga i-check ng doctor para sure, lalo na ngayon na malapit ka na sa due date. A few of my mum friends felt iba-ibang pains towards the end, pero lahat naman napunta sa OB para ma-confirm. Take care, mama!