HCG Levels-numbers...what's normal?

So I'm supposedly 7 weeks along and my doctor ordered another HCG test yesterday after complaining on sharp lower back pain.  I've been in and out of the doctor's office doing blood testing for 3 weeks now.  My levels are in the 1900's but my doctor seems to be really happy with that?  I keep seeing everywhere that most mothers have levels in the thousands (5,000-20,000) by this time.  Is this weird?  Has anyone else had this happen to them?

[jschoch8]

its seems a little low but everyone is different. you could be in your sixth weeks still or implantation couldve happened late.  instead of blood tests, what you need is an ultrasound at this point to see how things are going. you should be able to see your baby with a little heartbeat. try to get an ultrasound if you can, way more reliable.

[nickieb85]

It sounds more like 6 week numbers but your numbers could shoot up like no body's business! I wouldn't worry and most doctors won't do anything until your numbers are over 2000 so in the next few days or next week they would definitely be able to see something! I hope that everything is good with you!