6 w scan

Han • Future Mummy
Hello ladies and bumps
We had an urgent 6 w 3 day scan as we had some spotting on Friday. I have another scan next Thursday for an update. 
We couldn't see baby as they were so small but the pregnancy is coming along nicely and my hcg levels are very strong. I've looked it up online and they said too that it's very common not to see baby at this stage so I'm not too worried. They've ruled out ectopic which is great. 
Has anyone else had this?