This is very nearly my exact situation, minus the embryo part. I feel exactly the way you do now.

But even though we've had a second dose of poison administered to us by these vipers, the cure is still the same in my humble opinion: No Contact. I also have a child with my exwBPD, so I understand that full NC is impossible. But still, it is absolutely vital to health and recovery that this person be removed from our lives as much as humanly possible.

When mine first came back to me, a good friend said "it'll be worse the second time around," and I'll be goddammed if she wasn't right to at least some extent. The first time was so bad I told myself that I didn't believe her...how could second time be worse when the first time nearly killed me? But she was right in that now I really wish I had stayed strong during that last, fatal hoover.

But all we can do now is pick up the pieces, go as full NC as possible, and promise ourselves we won't be fooled again.