Can I drink buttermilk after this meal or not?

Hello.

If I top my carrot rolls with chia/linseed and cucumber, or tomato and a boiled egg (or two) – or sliced ​​Gouda cheese, can I drink buttermilk afterwards (after an hour or after two hours) or does that not go well with it?

I'm afraid I'll feel sick or get a stomach ache or a stomach ache.