Mama, please go to your OB or hospital ngayon na to get checked, at 38 weeks with that kind of pain, kailangan ng doctor to see what's happening. Hindi kami dapat mag-guess dito, lalo na kapag may unusual pain na! One of my mum friends had similar pains and it turned out OK, pero lahat ng pregnancy is different, kaya important talaga makita ng medical team kung anong nangyayari sa iyo. Bilisan mo, ha? Huwag mag-atubili. Keep us posted, kami nandito for you!