Possible chemical pregnancy

Hello.

I had pregnancy like symptoms such as nausea and tender breasts etc. im pretty sure i was 2/3 weeks along. And im suddenly not feeling any of the symptoms and i started bleeding a week before my “supposed period” and im usually on time

Im also suddenly passing a lottt of blood clots. Which i Dont experience in my normal period

Is this a possible chemical pregnancy.

Im also experiencing some cramps which have been painful