Increase in HCG

So I had hcg bloods on the 30may and they were 700 had them done on the 4june and they were 6777 😍 Morning sickness started yesterday after feeling nauseous for a few days and generally so tired! Got a early scan next Tuesday so hoping to see a little heart beat to reassure me everything is progressing nicely after a horrible miscarriage in April! Unsure of my exact date ? 6 weeks!