I Had A Bilatteral Hernia Repair In 1997. Coming Out

I had a bilatteral hernia repair in 1997. Coming out of anesthista was awful, plus i couldnt see fot about an hour. Within a month, severe headaches began and left me weak, etc. For two years went to diffnf. specialists (neck, eye, ear, shrinks, etc). Was even at Barrows Neuro Center, lots of tests LP,CAT scans (no mri due ti stapedectomy) and no cause was ever found. Have you heard of lingering, painful migraines and personality changes after surgery.