Wahhh, takut lah memang bila ada situation macam ni, kan? But alhamdulillah baby's heartbeat okay, that's a good sign. Since you're warded, your doctor is monitoring closely, so you're in the safest place. A few of my mum friends went through similar scares during pregnancy and most turned out fine, but every case is different, so trust your doctor's updates lah and rest as much as you can while you're there. Sending you strength, mama! Keep us posted when you're ready.