Hello~I have many of the same symptoms that you do, especially the constant dizziness and heart skips, it is miserable. Mine are due to bad anxiety and also fibromyalgia.
Have you discussed this with your doctor? It seems to me that with some of the issues you are having, he/she would be able to help, especially regarding the ANA results.
I would try adding a good, vitamin"B" complex to your diet along with a good multi-mineral and extra vitamin D and A. For the ringing in the ears, try using Ginko, it is an herb that helps with ringing in the ears and sometimes dizziness, it comes in a capsule. All of this can be purchased at a health food store or on-line through I-Herb, I use them since I live in New Zealand, their prices are lower and they carry the same things the vitamin stores do. Also, maybe try seeing a chiropractor, he/she might be able to help with the migraines, dizziness and other issues.
I hope you feel better and that these issues will be resolved.