Upset stomach and feeling sick

Any home remedies to ease reflux, upset stomach and feeling sick?

I'm currently 24+ weeks and visiting my family in Asia. And traveling back to UK in two days. I was okay the whole trip and now I'm just a bit too off. With this headache and acidic reflux.

Anyone has got nice ways to ease it up. I'm taking alot of milk. Don't feel like eating anything else. Any other suggestions please