It took many months for me to be able to lie on my back. Somene had pulled my legs put from under me on a skating rink and I went straight back (had a helmet thank god!). Doctors always said it must just be tenderness at the point of impact. Still have no idea why it took so lo g to not throb with pain.

Hope it helps to know others have experienced something similar. As for explanations????no idea.

Hang in there.