Chemical or Heavy Implantation?

Amanda

On the 26th I got a faint positive test, followed by light bleeding. Morning of 27th slightly lighter positive test. By the afternoon of the 27th major cramps, heavy bleeding and small clots, 28th and 29th light bleeding which stopped on the 30th. Today, the 31st, no bleeding still faint positive line, more noticeable than the one for the 27th. Could it be super heavy implantation or is it mostly likely a chemical pregnancy? I'm going with the second choice, but I still have my hopes up which I shouldn't. I do plan on taking another test at the end of the week just to be sure.