I can hear how scary this must be, especially after the rush to KKH. But since your doctor has already seen baby on scan twice with a normal heartbeat and has told you to continue the duphaston, that's a good sign to follow his lead right now.
That said, brown clots and vaginal cramping together still need proper checking out sooner rather than later, lah. Please call your O&G clinic and let them know what's happening these past few days instead of waiting till 12 weeks. Even if it's just to get reassurance or rule things out, it's worth a quick call or earlier visit given you're still bleeding. The fibroid and the duphaston are things only your doctor can properly piece together.
Hang in there. Most times spotting in early pregnancy can be okay, but you deserve peace of mind sooner.
Stacey Koh