What Causes Soreness Of Breasts Headache And Mood Swings?

hi, 2 years ago i had a miscarriage and since then havent been so lucky trying for another. however over the last week and a half ive been feeling so different, my breasts are sour but only on the outside, i have headaches, my mouth taste and throat has a weird taste it to. i'm tired all the time, i'm quite moody to and thats just not who i am. on top of that im really constipated and i dont know whats going on with my body. however im not due on my period until next week. i need to know what the likely outcome is, i'm not sure if i should be up and about at the gym or sat at home taking it easy.