Worried, im 8 weeks due to ovulation date and had us yesterday, tech said baby was 8 weeks but couldnt find heartbeat

Katrina
I know im clutching at straw's but could she have made a mistake? She couldn't get my husband and i out of office fast enough. So sad. Midwife just rang and told us the miscarriage process. But can't see anyone else until Monday unless I start to bleed then have to go to hospital. Feel very lost.