Unhinged's suggestion of:
Here's a simple suggestion. Rent an apartment for six months. See what happens. Reduce all contact with your EXWW to texts and emails, no talking or sight. Cold turkey! Gray rock.
is excellent, although I would add one alteration and that being your STBXW (or is it ex-wife now, Gemmy? Did the judge sign the papers?) should be the one to move out- either to her parents/family or to a different short-term housing place.
Child visitation according to the previously agreed upon divorce settlement to lessen the amount of communication between the two of you.
Hopefully you and your STBXW/XW are in the financial position to do so. If the agreed upon divorce settlement called for your house to be put on the market and the proceeds split, well I'd recommend finding a realtor as soon as possible. For some reason I have a feeling that seeing a 'For Sale' sign in front of your house may knock out some more trickle truth from your STBXW... you know there's more after 14 years of lies, there's always more.
In a previous thread I suggested your wife was like the scorpion from The Frog and the Scorpion story... I'm sorry she stung you again. I really am. I also hate relating your immense pain to the pain of an insect sting but really no words would suffice. Stop giving her the power to hurt you even more. She's abusive and plainly... sadistic. Please get away from her.
Good luck on the paternity testing. Unfortunately, you will face more pain while awaiting the results with every conceivable worst case scenario running through your mind. Seriously, have someone with you that you trust when you open up the results.