It really just means that you are not very animated in your facial expressions, voice tone, and body language. It means that no matter what you are told or what happens to you, you respond the same way outerly, with your body language showing no real change. It also usually means that your voice is monotone, or flat. Physical expression of your emotions are minimal to none.
On average, via Ultrasound, they should be able to detect a heartbeat around 6-7 weeks. However for some women it can be up till 10 weeks. The range of the heartbeat that they feel is good is 120-170 or there about. I hope you are doing well.
Your baby's heart beats between 110 times and 160 times per minute. You may also hear your baby's heartbeat at one of your antenatal appointments. Your midwife is unlikely to listen for it while you're still in your first trimester, as it can be hard to detect at this stage. After this scan, the next time you'll hear your baby's heartbeat will probably be during your 16-week appointment with your midwife.