My left shoulder by my delt is paining me when I pull the bow back. It loosens up after a few shots but that first attempt makes me wonder if I can pull back. I shoot just a 45 lb bow. All I can think of as a cause is the push ups I've done since pretty much forever? Never had any problems at all but this over 60 crap is maybe wear and tear? Dr appt this Weds. Anyone else had this happen and how did it go? It's a pisser and has me worrried about my shooting.