I Woke Up This Morning And I Didn't Notice Anything

i woke up this morning and i didn't notice anything untill i put my pance on and my inner thie on my left leg was really sensitve but it goes from the front of my leg to the back and its about as round as a basketball im 43 male athletic i work out not heavy lately work alot i dont get much rest or sleep. i got kids that should say enough