Possible miscarriage? Blighted Ovum ?

So I had a early scan at 4w 5d recommendation from my doc to confirm pregnancy wasn’t ectopic ... everything was ok at that point could only see the sac... fast forward 2 weeks I started light spotting (see photos over a couple days) it started light pink then brown then had another scan ... u/s showed I measured at just 6w and still had a empty gest sac... hcg levels have been rising since I found out I was pregnant... I had bloods done last Tuesday hcg was 8600 and bloods done yesterday (exactly one week apart) and hcg was 11300 ... since the u/s bleeding got heavier very similar to heavy period and have since gotten a lot more of the bleeding in the last two pictures... have also had period like cramps the last three days on and off... doctor doesn’t seem worried at all.. she has booked for another scan and set of bloods... has anyone else had something similar or could shred some knowledge on my situation 😭😭😭 have got second opinion from another doc and she also didn’t seem very fazed by it... help 😔😔😔