Ahhh I feel you lah! Alot of us third trimester moms complain about this jugak. The numbness is usually sebab baby dah besar and taking up space, so nerves kat tangan and arms kena compress especially kalau tidur dalam certain positions. Plus extra fluid retention in pregnancy makes everything feel more swollen and tingly. Try sleeping on your left side kalau boleh, it's actually better for circulation, and maybe use extra pillows under the arm tu or between the knees to take pressure off, a few of us found that helps betul-betul. Tapi kalau the numbness terus saja or dah sampai ke fingers dengan severe pain, check with your doctor aje just to be safe okay, better to clear it up now before delivery.