i am getting a throbbing pain in my middle deltoids (especially the left one) and right on my elbows/forearms. and every time i lift chest with dumbbell press it burrrnnns. i can barely lift my phone or type on the computer without it throbbing my whole entire elbow. its like a muscle or a tendon or something. reminds me of the pain i would get from pitching a baseball too much...could this be from weightlifting? are my tendons struggling to keep up? within three weeks i have gone fromdoing dumbbell bench press at 40 pounds for 12 reps to 70 pounds for 12 reps as an example of why i think weightlifting is harming me. i never do below 5 reps but i will in the future, i want to do compound movements at 8-12 reps to strengthen my supporter stabilizing muscles.