As for the elbow.. i duno if its a tendon issue, ligament issue, or a cartliage issue. In your case hope it is a tendon issue and get it checkd out.
As for the pec issue.. i could recommend things that could help. it doesnt seem like you are having any major issues there. This is going to prob be annoying but it you want it to heal i would take this advice.
Ice the area where it hurts. 20 minutes on 40 minutes off. Then after iceing and before lifting you need to stretch the pec for at least a couple minutes before lifting. After stretching do like 5 lb weight dumbell raises. do big circles. little circles. Also another thing you can do after that is call petrisaging the muscle. its a massage tenique term. and all it means is to knead the muscle. and what you are doing is just softly (not crazy) trying to move the muscle around in your hand. bend it. squeeze it. stuff like that. Doing this will squeeze all the bad blood and toxins in your muscle and bring in new healthy oxygenated blood. this can be extremely beneficial.
really hope ya get better man. good luck. try not to go too crazy with the benchpress for a while. and stay away from that elbow. you can try icing it for a while. and stay off it. then try lifting again. but i dont really know about your situation.