Wa'alaikumsalam sis! Honestly, any chest or upper belly pain yang baru muncul macam tu, better you go check with your doctor or hospital je, don't wait. At 37 weeks, you're so close to labour, and it's better to be safe than sorry. Boleh jadi normal pregnancy aches, boleh jadi something else that needs checking, doc can tell in 5 minutes. Go lah, or at least call your gynae describe the pain and see what they say. Jangan risau, just want to make sure you and baby are okay!