I got to see my baby at 7 weeks. So 5 may be to early to see anything. But good luck first doctor appt are a breeze. Nothing to worry about.
5 weeks! He/ she is really tiny..I got to see my baby for the first time at 10 weeks and I saw the heartbeat..I can tell you though, time passes by so fast during pregnany, so enjoy it and and make sure You work out and eat healthy..
Good luck.