hard to say.
I had a scan at a little before 6.5wks and they saw a flicker
I had a scan at 6wk 6days and there was a healthy heartbeat
The baby is still really small for them to detect a heartbeat....the heartbeat actually starts about 28 days after conception but is really hard to detect with an ultrasound until between 6/7 weeks. I pray that you have a safe and healthy pregnancy!
No worries heart started beating at 6 weeks:)