8weeks pregnant upt positive on 22nd jan 2014 but nothing in ultrasound except for fibroids not even sac , hcg level 2050

I m 31 years old got surprised bfp on 22 jan soore boobs , mild nausea, aversions, spotting and cramping on and off , on 14 feb I went for scan and the doc couldn't see anything except for fibroids of 45 mm