Find a hard level surface, chock in front of, and behind, both front wheels. Have a helper try to move the vehicle fore and aft while you watch every suspension and steering pivot point.
Or even better take it to a good truck shop for a 4 wheel alignment. They will tie it down, use jacks and rams to find any problems.
Or, you can take extra stuff out, drive a little, decide to treat it like a mule.
Put a sick mule in a pasture, it might die, or it might get better. But your vehicle may die, but will never heal itself
Little problems are worse than a loan from the bank. You know when the loan is due.