Dear Dr, I’m the process of trying for a baby, my fertile window was around 28feb to 4 march. A few days ago I have been getting slight twinges in both ovaries, the twinges are throughout the day, but they are not constant. My period is due on the 17th March a week before I get tender breasts, cramping, and very bad back pain . I have none of these symptoms. Is this sign of implantation?? If not what could be resulting to this? Hope you can answer my questions Thanks you Ra