Positive pregnancy test, faint positive urine Dr.'s test, low HCG number

MegRoxy113

So, got my first HPT Monday, one day after AF was due. Call the doctor who tells me to come in yesterday. I take a urine test and she said that she read a faint positive test, but wanted to do a blood test to confirm. Called this morning and I have a HCG level of 22. I know. It's low.

She wants me to come in tomorrow afternoon and do another blood test to see if my levels go up. I'm just putting this out there, but has anyone been in the same scenario and had a normal pregnancy?