What Causes Uneasiness Post Open Heart Surgery?

I just sent my question it was concerning how I feel 7 months after open heart surgery to repair mitral valve and wonder why today I am so sick if this was not a success how would I feel today or was there another valve they missed Do you know that today I am a sicker person , I can t go on like this surely someone will find out why I am nauseous at times has terrible uurges to throw up sweating & weak lose strength out of legs coming up stairs which I had to quit stairs I was breathless now I am having pain this past week between shoulder blades &right shoulder had echo last sunday now I have to try and wait until Wednesday to see cardiologist but I am sure she has report my heart is pounding fast this surgery was done here in st. john s nl wish I had to go away to have this done. it is done through the groin in some places I was a very sick person I lost a week I don t remember and its terrible to still be sick do you know of anything or anyone who was like me Thanks so much for listing .Millie.