hey Im 20 years old, I lift alot and play tennis recently I did the whole gerard butler 300 excersise and after that my back felt numb and hurt so bad. Before this my lower right back right above my butt cheek started hurting after i ate alittle while before, I think I tweeked my back playing tennis before all this. But im not sure what the problem is. I still use the bathroom everyday its just not as much as i would expect what do you guys think?