I had moderate pain for some time post-op, but it finally subsided at about 4-6 weeks. I am at 12 weeks and have (what I consider) very, very little pain, only an occassional chest soreness. Your body just underwent a lot of drama and you need some rest to recover. Always check with your doctors about any concerns. If they agree, try taking more walks around the neigborhood. Social interaction always seemed to help me. When I took my heart pillow on walks, it always brought a smile, support and a positive comment from people on the street. You might be suprised at how many cardiac are in your neighborhood and that they understand what you are going through.
Ron