Nope, nothing wrong, you just caught it early!! :)
Thank you so much i got so scared i didnt know what was going on.
Just to make sure your levels are rising appropriately, you must have gotten a high enough hcg (pregnancy hormone) to indicate you're pregnant, but it's still low because you're early in the pregnancy, so they'll repeat and make sure the levels are rising good, they did it with me too, and I'm 18w2d now! :) Congratulations!!