It is always best to have those levels retested just to make sure, but I am so sorry, this does sound like a chemical pregnancy. I have had them myself and I know how heartbreaking it is. Chances are you won't have much cramping, although you may have some much like your period. If I am right and this is in fact a chemical pregnancy, you will some bleeding, much like a heavier then average period. Now please remember, I am certainly no Dr.