Little confused ?

On my last period in February, on my last day of my period which is usually very light almost nothing. I had the complete opposite. I was bleeding worse then my first day and for the first time ever in my 11 years of having my period I was having blood clots bigger then half dollar sizes coming out of me. But the next day they were gone. But for almost 2 weeks now I've had very sore breast. They were big and so sore. I've been extremely tired and I don't even have a job. I've had slight random cramping. Everytime I eat I instantly feel nauseous but I don't have morning sickness. But after almost 2 weeks of sore breast, I wake up today and they don't feel nearly as sore as they have ? AF isn't due till 3/10.