House was once a barn...

[Nevrnfpwr]

We bought our house in Arkansas in March 2004 and during renovations last year, we found physical evidence that our house began as a barn. The evidence is as follows--10x8 upright beams in center of house, 8 inch round posts in outer walls and filled in waste trough in slab. I'm not sure if the seller even knew this. When we purchased the house, the seller told us the master bedroom was once a carport that was enclosed, but that was it as far as construction concerns. Once I opened the walls and discovered the beams, the mold and musty smells in the house have gotten unbearable (my wife and kids have moved out of state with her mom). Between the health and structural concerns, I have stopped the renovation and am not sure what my next step might be (if there even is one). I'm currently deployed (military) and would appreciate any help in what direction I need to go and possible outcome of this situation holds.