Strange stomach pains from running?

I started training for cross country again about 3 weeks ago and I've been fine until about a week ago my stomache started hurting and I couldn't run or jump without the area from right below the belly button to private areas hurting( I'm a male). Its the strangest feeling but its keeping me from running and I need to be able to train this summer so I won't be so outta shape when the season really begins anytime I jump or bounce there is pain in the area I described, can someone give me any idea what this is and if I need to ask my parents to take me to a doctor?