Worried it could be chemical pregnancy?

I am 8 weeks gone already into my first pregnancy and the only pregnancy symptom I have is sore breasts, Am really worried have absolutely no other pregnancy symptom. Early previous week I had some cramps but these stopped as well. Did blood tests twice already and all positive, now my 1st scan is scheduled for next week and I am VERY worried that the doctor might say it’s a chemical pregnancy.
It worries me a lot if no symptoms mean that my pregnancy has resulted in miscarriage or if my baby has not developed.

How does chemical pregnancy feel from normal pregnancy. Is der a symptom to differentiate them?