urine & blood tests

Sierra
I just found out i was pregnant about 2 weeks. Im only one day late for my period but took 6 pregnancy tests and all were positive. Went to the doc 3 days before my period and bloodwork was "indeterminate"
They told me to wait a week and come back in. Has anyone else gone through something similar? Was it just too early to take a blood test? How could a urine test pick up more hcg levels than a blood test? 
Thanks mommas!