Sayang, I understand why you're worried, but please go see your doctor again soon, don't wait, especially if the bleeding changes or gets heavier, okay? Since you've already heard the heartbeat and doctor said it's okay, that's a very good sign, tapi brown bleeding in pregnancy needs proper monitoring, and your doctor needs to check you again to be sure everything is progressing well. Take care of yourself, and jangan stress sangat, just get checked again, ya?