If I were you, I'd stop the Milk Thistle and see what happens. Once you've established a baseline, I'd stop the fish oil and see if you notice any other change.

Thses are both great supplements but Milk Thistle can really affect your mood and unless the fish oil is certified for undetectable mercury content, it could be making things worse.

In short, make sure you're using NSP Fish Oils because of it's certification for undetectable mercury levels.

Let us know.