First trimester

Second baby om the way and it's been horrible. The nausea won't go away and somtimes I do wish I threw up. Nothing seems appetizing and I force myself to eat what doesn't make me sick. I got some medicine prescribed but it just makes me constipated and it doesn't fully take the nausea away. I'm constipated in general, my stomach has started burning most of the time I eat and it's sometimes as bland as oatmeal or bananas. I'm exhausting. I do stuff around the house pt try and run errands and it's not even an all day thing and I'm so tired. I don't have an app until next week but are there any tips ? I can't go another day like this. I need some relief.