I had sex 2-3 weeks ago and i should be getting my period soon. But I've been extremely tired, crampy, I've had plenty of headaches, and my back is kind of hurting. My breasts have just recently started hurting but the areolas have had a blue ring around them for about a week now. My body has been hurting also like my legs and arms, it just hurts to touch them. I've also had a little bit of constipation (sorry TMI). Does anybody know what this could be?