I am 34yrs old my last menstrual cycle was on 1/20/14 and I was expecting my cycle to come on on 2/20/14 but it still has not come in for the month of february i  took two pregnancy test on 2/18/14 and 2/19/14 at home they said is negative but my breast feel like theire so sore and tender I think i am going crazy not knowing whats wrong with me.