3rd miscarriage?

I know it’s early but it doesn’t stop it being heartbreaking. I found out I was pregnant on Friday. Then Sunday night at 4 weeks pregnant I started bleeding. It was a small patch that when through my underwear and pjs in one spot. It was very red. Then it’s been old blood since. Nothing today. So can I have a chemical pregnancy bleeding for one day? My pregnancy tests are getting darker. The doctors say I have to wait and see then they can get me a early scan. It’s not like my other losses. I had a natural miscarriage at 6 weeks bleed for 1 week in lots of pain. A missed miscarriage at 9 weeks. Which I bled for 3 weeks and was in agony. Am I pointlessly holding onto a miracle? I’m also pregnant right after miscarriage too. I never got my pregnancy. My level did go down to where they should.