Piriformis syndrome? doing an ollie, i used my a$$ muscle to pull my leg up. it now hurts to move leg backward

when i was doing an ollie over a tennis court net, i completely used my a$$ muscle, and my upper back thigh started hurting, so i stopped for a couple weeks and i went away, and now i fell off a bike, and now it hurts to stop a kick, or lift up my leg backwards while lying down, doing lunges with the hurt leg in front, or kicking backwards. it doesn't hurt to move the leg outwards. but all the pain is right below my a$$, right by the crease and kinda hurts to sit entirely on it. hip ex-flexor? hip flexor? piriformis syndrome? help me out pleze