Sayang, dengan kandungan baru 6+ minggu macam ni, sakit pinggang, perut memulas, dan mual adalah quite common, tapi since you're having these symptoms together, better go see your doctor or go to clinic/hospital today to check, okay? Better safe than sorry especially first pregnancy. They'll do a scan and make sure everything is okay. A few of us mum friends went through similar scares early on, some turned out normal, some needed attention, so jangan tunggu je. How are you feeling now? Any bleeding?