Miscarriage?

L

Hi everyone, a bit of a confusing one here.

My last period was the 10th January

On the 24th February I found out I was pregnant. Confirmed with a strip pregnancy test which was a very faint line and a clear blue date one which said pregnant 1-2 weeks.

I went to the EPU the following week due to bleeding, was told they couldn't see any signs of pregnancy on the scan plus my hcg levels were only 7 so I have miscarried (this was the 28th Feb)

Went back to the EPU a week later as I was still bleeding. I had another blood test and my hcg went up to 17 so I had another blood test 48 hrs later which showed my levels went back down to 10.

Another week later I am still bleeding and thought I would take another pregnancy test to see if it is negative yet. This test still shows positive and is even darker than the test I took when I first found out I was pregnant.

Has anyone else had anything like this?

When will the tests show up as negative?