What Causes Breasts Pain And Soreness, Back Pain, Frequent Stools And Headaches?

SO WEEKS AGO MAYBE AT THE END OF JUNE, I HAD A MISCARRIAGE AT 7 WEEKS. I HAVENT BLED SINCE THE MISCARRIAGE AND NOW MY BREASTS HAVE BEEN HURTING AND REALLY SORE AND ALSO THE MIDDLE OF MY BACK HURTS AND I HAVE ALSO BEEN POOPING ALOT AND STARTING TODAY , GETTING HEADACHES OUT OF NO WHERE. ANY SUGGESTIONS ON WHAT THIS COULD BE ?