Are there any health issues from emf from high voltage power lines?

My partner has had chronic pain problems for years and they seem to have started when she worked near a field of high voltage power pylons. Although she no longer works there the problems seem to have persisted as we also have a mains terminal post twenty feet from our bedroom from which pigeons drop D.O.A on a regular basis(not a bad thing). I believe that high voltage AC generates an electromagnetic field and I wondered whether this can cause problems with the nervous system. My partner has an immune system related illness and is stuck at home. Would she be more likely to be affected than someone without these problems and who is not confined to home? Any sensible comments would be gratefully received. Thank you.