I Had A Miscarriage A Little Over A Month Ago

I had a miscarriage a little over a month ago and my period carried to November 7th. When it came to a stop later on that night, my boyfriend and I had sex. The next day I started bleeding again. So last Friday, the 13th, I took a home pregnancy test while I was bleeding a little and it was negative. It stopped this past Sunday. Sunday night I started to feel mild cramping in my lower abdomen. Ever since, I have been fatigue, still cramping, headaches,frequent urination, etc. Could there be a posibility that I am pregnant?