HCG levels - chemical pregnancy

Julie • Pregnant with my 🌈 Baby - IUI Success Baby

So very confused - last week I went to the ER because I had gotten the slightest positive but was spotting ( advised to go to er due to previous MC) I went in and was advised was a non viable pregnancy and my HCG was only 9 .. followed up today with my doctor as my positives have only gotten stronger and my HCG is 26...

I did bleed and got my “period” for 3 days straight after my er visit

Anyone have this happen to them ?