Beer makes me feel sick but why?

So I once in a while enjoy a good beer but I find that, depending on the type, after 2-3 I start to feel sick. Like I’m about to throw up if I have anymore. And even if I spread it out over a few hours so I don’t feel nauseous, I feel off the next day. Like slight stomach discomfort and more frequent bathroom trips. But wine, cider, liquor or even bread (for yeast) are totally fine. Any idea what’s going on with me?