No Heartbeat Detected

I'm supposed to be week 7 pregnancy but went to doctor for my 2nd appt for ultrasound. he said I'm still at week 5 and fetus inside not growing and can't detect Heartbeat. Just had a blood test and waiting for result. Anybody had the same experience as me? I don't have any bleeding, no morning sickness but I do feel bloated after meals. I'm very worried now and even cried about it.