What Causes Severe Headache And Increased Breast Size?

Hi, my last period was the week of Christmas. I have been feeling quite ill lately. Within the last few weeks I feel a lot warmer than usual. By this I mean that I usually a person who feels cold more often than my friends. I have also been feeling very dizzy and nauseas. A few days ago I was getting bad headaches and then they would go away and come back. As of monday i began feeling very weird. I usually get very bad back pains but this time it just felt very uncomfortable so did the cramping. Not enough to make me be in extreme pain like normal. However the last few weeks i felt my breasts were coming out of my bra and i don't feel them hurting like when on my period. I began spotting on monday night and tuesday I barely bled. Now wednesday I feel i am bleeding more. I am very confused on what is going on.