Chemical Pregnancy

I had 4 positive pregnancy test, including a digital. My period was due last Sunday, and I started bleeding Friday and continuing. Mild cramps similar to my cycle. I had HCG drawn and it was all but negative. Very confused to the 4 positive pregnancy test I got. Would you consider this a chemical pregnancy. I feel my office wasn’t very helpful in explaining why I had four at home positive pregnancy text, and then having what they assume to be my cycle and a negative e HCG blood test.