Congrats sa pregnancy, mama! Honestly, 7 weeks pa lang kaya super maliit pa ng baby, hindi mo talaga expected na maramdaman mo ang heartbeat niya from the outside, kaya don't worry! A few of my mum friends din nag-worry about the same thing, pero the doctor explained na usually around 18-20 weeks pa lang talaga makikita mo ang movement or madarama mo sya clearly, at yung heartbeat ng baby ay best detected pa lang through ultrasound or doppler at this point. Best mo lang gawin is mag-relax at enjoy your check-ups with your OB para makita mo talaga yung baby and hear the heartbeat from their machine, mas assuring yan talaga!