anyone know why? explanations?

So I was in my period for 4 days feb.13-17 then again a week later. I've had horrible cramps this period and period stopped yesterday still having cramps and my whole body hurts woke up last night my throats hurts and been coughing. My whole body still hurts and my legs are crampy. Not to mention I've been really moody and I've had a few breakdowns. My bf thought it was weird that I got my period again and asked if I was pregnant? But I can't be because I just had my period. I feel like I just got run over by a truck. What is going on? Anyone have an explanation? Please....