Okay, went to the doc. Sometimes, (no offense) I think they are usuless. She just said put some ice on it and gave me a prescription for naproxen.
I guess she wasn't to worried about it.

Annagrace, yes we have heart diesease in our family, but I don't think that is what it is. Of course I am not a doctor either, but just the way the muscle on top of my shoulder feels so tense makes me believe that is not it.

Fresh, I have never fallen that I can remember on my shoulder to injure it. I have fallen on my butt plenty of times. LOL My hips kill me sometimes.

Roadraven, I have hills all around me out here in the country. It is flatter in town, but I would have to ride to get there. Shoot the first hill I hit is the road leading out from where I live. It's down on the way out but it is a messed up dirt and gravel road that needs work, so I have to slow it way down and then it is always the last thing I have to tackle when I get home.
The 10 miles or so I ride regularly is hill, after hill, after hill, and then a little flatter area but it is even small grades up and down. The kind that aren't really noticable unless you are fiding them and realize why you are slowing down so much. LOL

midgetcycler, I have avoided the clipless peddles mainly because I am a little intimitdated and afraid of them. Ecspecially after hearing everyone say how they have fallen at least once. So, I haven't gotten up the courage to go to them yet. I will try putting my heal down, but that seems like it would make it hard to peddle.