Miscarriage

I found out that I was pregnant about three weeks ago. I started to bleed on Monday (and it still hasn't stopped). I have been to the doctor everyday since Monday to have my hcg (pregnancy hormone level) checked. At first my levels were not going down but they were not increasing as they should. At my last appointment, on yesterday she informed me that my levels were down and I had miscarried. I don't know if I can handle this.