Sayang, any bleeding in pregnancy kena check with doctor or go to hospital sekarang juga, especially dengan back pain lagi, better safe than sorry, ok? Please don't wait. I know it's scary sebab dah jadi before, but this needs proper scan and checkup to make sure baby and you are both ok. A few of my mum friends had bleeds at different weeks and each time was different cause, so only doctor dapat reassure you properly. Go now ye, jangan tunda-tunda. Thinking of you, update us once you've seen someone