Heart has stabbing pains with PVC's

I'm 62 and now getting fed up
I get PVC's with stabbing pains
I had been to the ER 4 times in 6 weeks
At one time my O2 was 88 to 97
I had a halter on for 24 hours and I had non stop crazy beats,some with stabbing pains.
Then my doctor says it was OK.
RIGHT!!!
I has scans with and without dye,2 stress test and 2 test with the nuclear med department,a cath and brain wave activity and i'm told nothing is wrong.
When these hit with no warning I can't  breath,O2 is low and at times heart rate may shoot up.
Even a heart doctor called my regular doctor and asked why send him to us if all test are OK
Right now I can't live normal and a gun is looking good.
At times they last long and I can't sleep and it gts to the point where I just feel like I slip into a coma then wake up OK
They may start again tonight or maybe a week and just be mild and last 15 minutes
ANY HELP?
I want my life back  

[bbxx]

Wow. That does not sound good. If you are in pain and having oxygen issues--my word-that is not ok.