Hello--I hope this reply helps a little bit. What you have is most likely shin splints. Basically shin splints is where the muscle around the shin begins to rip away from the bone (causes bruising). Don't be too worried as it is not very serious and happens to the best of us. It is caused by the muscle not being used or worked therefore it is not strong enough to support your activity. Now as you can probally tell for yourself.. the shin area is a very tough place to gain muscle,therefore you must gradually work your way up from easier activity to more intense. Your shoes might also play a part in aquiring shin splints. If your running, make sure they are proper running shoes with lots of support. What you need to do to is rest your shin splints and let them get back to normal (try putting ice on them). Continue to excersise--just take it a little easier. Walking is an excellent way to excersise and it is nice and easy on your joints, knees, etc. I hope this helps!! good luck.