Blighted Ovum

My doctor diagnosed me with a blighted ovum after she brought me in early for some light red spotting I had. She found a subchorionic bleed about 2cm long and nothing in the sac. I passed a few clots earlier this week and still bleeding red. When I went back in for an US she said the sac looks like it’s collapsing because my bleed got bigger but my numbers were still rising. Anyone been through this and can tell me how long it took to pass? I plan on waiting a week then getting surgery. Second miscarriage this year; first in June (mmc). I feel broken. Trying to have my first baby is hard...