I felt the exact same way as you do. Shoulder pain was in both shoulders and pain across the front right below my neck. It hurt awful to take a deep breath. I was so worried too but it was all normal and part of it. It didn't go away until about
2 1/2 weeks and then it was gradual. I didn't take any pain meds after I was home so it may have been a bit worse for me. I don't like taking those. I hate the way they make me feel so it was just Tylenol for me.
I am a month out from surgery now and believe me, things will get ALOT better. Be patient and give yourself time to heal and it will all be good. It's hard with all the new symptoms you think something else is wrong.
Hanging there and what your feeling is totally normal.