right below my left hip bone. .. dont know what i did. 3 weeks sore now. still riding, but it hurts.. gonna take time off. tolerable, but it isnt like the right side of my body...cant think of what i did. cycling 25 years+ never injured.. only thing is i rode a ton of 1/4 mile hills very steep for 3 hours 3 weeks ago..sat on some stood on some.. thats the only thing i can think of thats a bit different.. maybe different muscles were used on these hills. probably did 30 of these on this route we took..aqny suggestions? thanks alot