Hi, Ive been getting this pain for the past 6 months. It starts a day maybe two before my period. It worsens and during the week of my period and only gets better into the second or third week. Its ok most of the time if Im sitting but as soon as I stand up its excruciating and I need to either lift my leg up as Im standing up or I need to double over till it subsides. When I climb onto my bed and it kind of stretches then its really painful. Ive been for a sonar scan and they "think" its a torn muscle but they cannot say for sure. If its a torn muscle (as there is blood there and is about 1/2 to 1 cm long) why does it come back when I have my period? Any ideas on what this could be will be helpful. I can take a photo and of this and post it if anyone has any ideas.