Just wondering what do you think ?

had a miscarriage 1 mth ago on 3/11 found out i am pregnant :) on 4/13bc i never had af md cnt tell me how far along i am .... took blood work on 4/13 got results for my hcg ..2,913.... can anybody tell me how far along they think i might possible be bc my mom says lyk 2 wks bc of the dates but going by the hcg i would think that i would b further ....my gma is convinced twins .... go back for u/s and f/u appt on 5/5..... THX for the help