Wa'alaikumassalam, sayang! Stomach pain around the middle area at 8 weeks can happen, tapi since you're pregnant, mejor check with your doctor or midwife today je untuk peace of mind, they can do a quick scan to confirm everything's okay. A few of my mum friends had similar cramping early on and it turned out okay, tapi tak boleh main-main with pregnancy pain, better safe than sorry lah. How's the pain now, is it sharp or just a dull ache? And ada any bleeding ke? Hang in there, mama!