Mama, please see your doctor ASAP, hindi ito dapat i-brush off, lalo na with numbness and pain sa arm at back together. Better safe than sorry, lalo na ngayon na pregnant ka pa! Isa sa mum friends ko nag-experience din ng ganyan early pregnancy, pero kailangan pa rin niya ma-check properly para ma-rule out kung anong cause. Could be posture, could be something else, only your OB can tell, kaya please make an appointment or go to your clinic soon, okay?