I agree with the going to the doctor just to be safe. I was practicing my martial art with a punching bag,missed a punch and felt it sting,but no problem. Two days later it was swollen and immobile. Found I had broken a tendon which caused a big hassle,including no riding. End of my days in that type of workout but I would never have guessed at the damage or the result of my continued negligence.(my daughters made me go to the doctors - God bless'em)