Heart valve replacement

I am looking to see if anyone out there has had symptoms as blurred vision, dizziness, chest tightness, pain in neck, right arm, stomach pain, etc after having heart (mechanical mital valve)  valve replacement?  I have been complaining of dizzy spells ever since (2002).. stated my salt was maybe too low, maybe anxiety, stress...I recently just had a stress test and echo.  All shows nothing.  I do take warfarin, flecinide, zetia, permarian, xanax (as needed), mobic.  I was told recently to stop taking boniva since last bone desnity show better results, recently had gall bladder removed, before valve had hysterectomy.. was told I had fibromynagia ( not sure of spelling), arthritis, depression, anxiety, had back surgery...etc. But, I get these dizzy spells out of the blue...it is like being on a boat.  Some times I really really bad that I get nausea, cold sweat...it may last a few minutes or maybe longer. Sometimes I get like one eye darkens...like a shadow over it...My chest gets this weird sensation....like like or just hurts...sometime my are will hurt, shoulder area, neck area...only one time has anyone seen this...She stated my color changed and I felt like I was going to pass out....has any one ever experienced this type of thing...I feel like I am crazy...It is real...no one seems to find anything.  I was thinking it was related to heart valve surgery.  Thanks.