Possibly Implantation or something more?

I've had slight bleeding at the end of October, lasted about 2-4 days of the lightest bleeding possible around the third week in october. In my mind I thought it was implantation bleeding or even the possibility of implantation bleeding. November came an the first week of November I had a period that lasted about 5 days and after I bleed really lightly. I've been super tired and sore. I usually sleep on my stomach but it hurts too much to do so and it makes me queasy. I've been hungry and more agitated at everything lately. I'm confused on my body and what could possibly going on or what I should do.