Hi everyone! Girls, a question: what did you do when you felt nauseous…

Hi everyone! Girls, a question: what did you do when you felt nauseous? I don't want to vomit, it's just that I'm queasy and it's unbearable. I didn't have this at the start of the pregnancy. (When I'm nauseous I drink tea with lemon so it's sour.) It started about a week ago. And another question: how do you cope with heartburn? Today I ate a piece of fried fish — I really wanted it — and then I got a bitter taste in my throat, like my throat hurts.