Only by a couple of days- my 1st beta was 11.1. Very low, but I also was only 12 dpo. Of course when I got home, Dr. Google told me that other women who were 12dpo had beta's of 143 (!). I suddenly felt worried. Luckily, a close girlfriend told me to "Put the computer down!" I did, but it didn't stop me from obsessing. My RE has surgery every Thursday, so I had to talk to the other doctor in his office's nurse. She told the nurse practitioner, who I've seen just about as much as I've seen Dr. S. She said congratulations, but wanted me to call back tomorrow to talk to Dr. S, in case he wants me to do anything over the weekend (new drugs I'm assuming...).
I called back on Friday, and told him the number (the urgent care hadn't faxed over the results at that time) and he said congratulations! I then turned into 'psycho patient' and asked if my numbers were low, because Dr. Google told me they were, and I just don't know what to do, and, and, and.... then he made me stop. He said that my little one just took some time on the way down the tubes (and so that probably meant he was going to be a boy, because you know how men are, they never ask for directions...) and took some time picking his place to snuggle in. He said I'm VERY early in my pregnancy, but that's what we knew- and that's what that number signifies.