Waiting on hcg test results?

I am currently in my 6th week of pregnancy. Saw dr. on Monday and he said he wanted me to have HCG blood work done just to make sure my levels stay up due to miscarriages in my past. Took one on Monday and one today which is Wedsday and another one on Friday. Results are back from Mondays tests and dr has not looked at them and I haven't heard anything. I thought everything was fine but starting to get worried. I'm wishing for the best but hard not to think about what the tests say. Anyone have any incite into the HCG test process any info will be appreciated.