Worst day ever

Ok well started bleeding actually bleeding this morning called dr bc they still hadn't called me with my hcg results well it is not ectopic I am having a miscarriage as we speake my levels came back at 149 ... I am not in much physical pain it's actually less then my period cramps and this is tmi but I passed a piece of I guess tissue it was white with some blood on it other then that no clots really ... How long will this process take I am on the verge of a breakdown as of now and I can't handle this for much longer we wanted this baby so bad we have 3 amazing boys who I love so very much but this still hurts even though I am only 6w5d we never saw this coming this is the first miscarriage please keep me and my family in your prayers plz