Shoulder > front deltoid

I hurt my arm my junior year took a break for a while and now im back in season. When i throw i feel like im not reaching my full power and getting the wiping action in to a 100%. During off season i worked out did bands, the works.

When i throw and i mess up on mechanics i get a pain in my front deltoid. It feels like a ligament. but im not a 100$ sure. any ideas

http://www.google.com/imgres?hl=en&sa=X&biw=1920&bih=979&tbm=isch&prmd=imvns&tbnid=LxZRtBQp48mIQM:&imgrefurl=http://www.kulpphysicaltherapy.com/tendinitis.html&docid=TJ7EqTjCJ5qWbM&imgurl=http://www.kulpphysicaltherapy.com/images/shoulder/shoulder_Deltoid.jpg&w=350&h=340&ei=N0tBT5umDazSiAKbiNzdAQ&zoom=1&iact=hc&vpx=405&vpy=178&dur=3032&hovh=221&hovw=228&tx=134&ty=143&sig=106480104643219245814&page=1&tbnh=151&tbnw=155&start=0&ndsp=52&ved=0CE4QrQMwAg

Sorry for the long link. but right around where the x is in the picture.

same here

Have you been to the doctor yet and had a professional physician look over your arm?

If not I suggest you do that rather then try and get help from an internet message board. The human body is so complex that it could be a wide array of speculations as to what is causing this pain.

Go get it looked by a qualified physician.