Can I ask how do mums work in their first trimester? My wife is struggling with nausea constantly

I take Mc and leave as i am either keep vomit. Or i sleep whole day after i take the medicine to stop vomit. Now week 9 still a bit vomit but better ady. I try not to take the medicine. Have gastric problem and a lot of sour juice when i vomit. Must always eat even just 1 pcs of biscuit. Cant be hungry cant eat too full as it will make condition worst. Try to avoid spicy, sour and sweet If have gastric or want to prevent. I eat some red carrots when i hungry. If heart burn and chest pain because of too much gas in stomach, i drink 0 sugar soda drinks. After the gas come out then will feel better. I stop drinking soya and milk when i start to have gastric. Really not easy but gambateh.