i have a few questions not sure where to start but I went to the hospital last wed and found out I was pregnant it didn t show up on a iron test but showed up on blood test The dr said that my hcg level was 25 I put my last start date of my period into a calculator thing which was July 18 2016 , and it said I was 4 weeks and 6 days along is this around the time that I should be in the implantation stage ?