Trust planning advice needed

With the results of the election, I worry about my healthcare.  I have cancer and my care and meds are so, so expensive without good healthcare.  I am on long term disability and have SSDI but won't qualify for medicare for 2 more years.  Because of this, I was thinking I should set up an irrevocable trust to protect my assets and best ensure my son gets to keep as much of those assets as possible.  I'm looking for someone who can guide me through the best options given my situation.  Pls let me know if you have any advice, insights or recommendations.  Tysm!