Confused

A week today I started to bleed and was told I lost my baby I had my 5 hcg blood test on Sunday hospital rang me I went back Monday for a scan and got told I was still pregnant the baby measuring at 6 weeks when I should be 7 so back Monday for a scan the hospital explan what had happened they I went through the pain when I didn't need too just thinking positive from now on try not to think about what had happened just focus on the baby thate in side me now xx