still waiting

So I got blood work done; it was negative. My doctor thinks I could have possibly conceived and my levels aren't high enough yet, and I am supposed to go back next week to get more blood done. I haven't gotten my period yet. I'm so concerned it could be something other than pregnancy. Any advice on how to chill out before I get answers from my doctor would be so great. Thank you all for the support! I still can't believe I tested positive on two tests and negative on a blood.