Go for the long run and get the shoulder working properly first. Some who read this may have just a minor inflammation and some might have major pain. You need at least a few months before you can get back to normal. This does not mean that you are not going to do chest or anything. You will grow.
First thing is first.
Stop barbell exercises for a little bit. Start Dumbbell bench presses. This will keep the weight down and it will get your shoulders stronger. Your chest will respond to this and grow. The reason why you do DB presses it two fold.