It appears that my assistance was called for on this thread. Thanks WIY (unless you meant the other Sam).
To answer the original question (before Popa’s Ukimta), you were Over on the D’rabannan of Chalav Shechalvo Akum (I’m assuming it’s not Chalav Stam in the sense that it’s from a place where Chalav Stam is Muttar; because if that is your case then you are an Anus and Patur). You are not Poshea because it is a Chashash Rachok that the Goy will actually mix in the pig’s milk. Therefore, you are a Misasek on the Yotzei Min Ha’Asur of pig’s milk. Whether or not you are Chayav for that in Dinei Shamayim is a Machlokes between the Nesivos and R’ Akiva Eiger in how to learn Misasek BiChalavim V’Arayos Chayav Shekein Neheneh. Pashtus is that you’d be Pattur for Misasek because I think most of the Poskim assume like the Nesivos’s way of learning the Sugya instead of R’ Akiva Eiger’s. (Unless, of course, you learn out that this is a Shig’gas Metzius like some Rishonim in K’risos and that this is a Shogeg, not an Ones.) Oh, and no matter what there should be some sort of T’shuvah done to try and make up for the Timtum HaLev aspects.
To deal with the Ukimta: I’m not positive about any of this and I really don’t have time to look it up. I believe the Maskana of the Gemara in Bechoros is that a Tamei that comes out of a Tahor is Tahor, but HaYotzei Mimenah is Asur. Thus, the milk from a pig that was born from a cow is Assur. Once again, you would be Over the D’rabannan of drinking Chalav Akum. But presumably you had no reason to be at all Choshesh that this milk was mixed in (or replaced the cow’s milk) so this would probably be an actual Ones.
And to respond to Popa’s most recent post: There is no Din of Chalav Yisrael on Treif milk. It’s just not Shayach. You drank a Yotzei Min Beheimah T’mei’ah. Period.
Crazybrit: That’s Mefurash. Basar BeChalav only applies to a Beheimah Tehorah and Chalav Tahor.