Natural Cures for Bloating and Fluid Retention

I am trying ACV for fluid retention in my hands,wrist, and ankle. So far nothing's helped. It is crippling me. It's spreading and getting worse sporadically. I have had blood and urine tests that show nothing wrong but it's obvious something is and the doc.s don't have a clue. I'm poor and can't afford anymore tests or doctors. If anyone has any idea of what's wrong with me and what to do I will be very thankful!