Period Help?

So I got my period yesterday, but today was probably the worst period I ever had. I have been on birth control before to help my periods, but I got off of it because it really changed my mood. But I never had a period this bad. My cramps were so bad, I kept taking medicine throughout the day. I have a heavy flow and today was heavier than usual. And when I ate my body was trying to reject some of the food I was eating, at a point I couldn’t finish it. I felt nauseous for most of the day because of my cramps and I feel a little light head. And I literally look at shower and felt pins and needles around my neck. Right now I feel really tired, a little hungry but don’t have motivation to eat. Should I be concerned?