Miscarriage help

Caprice

I'm currently going through a miscarriage , I started bleeding on the 28th June and was told on the 30th that I had lost my baby. I had bloods taken on 28th which showed hcg as 90 then 30th which was 73 then again on 2nd July and they had dropped to 54 they then told me to wait a week and go back because then I should of had a significant drop. So yesterday (9th July) I had more bloods taken and today (10th July) they have rang me to tell me I have been referred from clinic at the hospital back to the early pregnancy unit for more bloods as my levels are now 50 ( have dropped 4 in 7 days) I'm still currently bleeding a lot and loosing clots. It has been 2 weeks on Sunday since I began bleeding and was at 90.

I'm so sorry if this post has upset anyone I'm just curious if this has happened to someone else and why my levels could be dropping so slowly? Thanks