Sayang, please go back to the hospital or call your doctor urgently today , jangan tunggu. Dark brown/chocolate bleeding yang banyak campur dengan clots mcm ni kena check properly, even though baby's heartbeat was okay last scan. Better safe than sorry, sebab doctor kena monitor you closely in these early weeks. A few of us mum friends have had bleeding scares in first trimester, some turned out okay, some didn't, but the point is, your doctor needs to see you again and maybe do another scan to check what's happening now. The change in colour and amount is something they should know ASAP, okay? Don't worry alone, just go get checked. Rooting for you!