Need advice

I took a test two days ago and thought I saw a line. I called the doctor's and for blood work done at 8 am. They said I was not pregnant and my hcg level was a 1. The next day I got home from work and got sick. I decided to test. My test had a clear positive. I got a confirmed positive by a clearblue digital. Others started asking could it be a chemical pregnancy. I started to worry. The blood test was 10dpo and the positive was 32 hours later on 11dpo. Well today I took another test because I wanted to see if it got darker. I took a first response digital and got a not pregnant. I decided to open it and see if there was a line. There was and it looked darker than yesterday. If my test keep getting darker, would that mean it wouldn't be a chemical? Could I have implanted after my bloodwork and just started having hcg show up. I know response curved handles can give evaps. Could the first test be an evap? Any advice helps!