Vegetarian retox?

I’m considering abandoning my vegetarian lifestyle. I maintained a very simple vegetarian diet that allowed me to eat fish occasionally, milk and eggs. For my retox into eating meat what should I eat and how should I go about doing this? I figure detox would mean getting rid of bad stuff, I’m trying to get the bad stuff back…

I’m pretty sure I can’t just start eating meat again without my stomach revolting completely. So any ideas or suggestions on what to do?