I just had open heart surgery on April 28th. I ve been doing really well. My back has been hurting since which my doctor said was normal. However, my should on my right side and bicep has been hurting any time I move it. Sometimes I feel like I don t have any strength to raise it. I have been experiencing neck pain up to the back of my head as well. I m wondering if this is normal. I ve been taking Tylenol. But I stopped it because I was worried about side effects. I was only taking two pills twice a day. I started Advil yesterday and have only taken two pills each day. Which would be safer? Thank you.