Trying to remain hopeful - has this happened to anyone else?

Went for my first scan on 10 March and was meant to be around 8 weeks. Only measured 6 weeks 2 days and no heartbeat was detected (unsure of my cycle after a dnc - so it was possible I had ovulated late). Went back 2 weeks later for another scan and unfortunately still only measured 6 weeks 2 days however a low heartbeat was detected (87bpm). Booked in to go back for another scan, however thought I would see if anyone else has experienced anything similar and carried on to have a healthy bub noting no development over 2-4weeks.