Tido dalam keadaan meniarap

Wa'alaikumassalam! Sayang, 8 minggu tu baby still very tiny, so sleeping on your stomach won't harm him/her lah. But as you grow bigger, it'll become uncomfortable naturally je, and doctor usually recommend side sleeping for comfort and safety later on. About your second question, that's something serious you need to discuss dengan your doctor or gynecologist, okay? Don't worry sendiri pulak. Every pregnancy is different, and they can check baby's heartbeat and make sure everything is fine. Go see your doc soon for peace of mind, yah? First baby memang scary, but you're not alone in this.