Ahhh I feel you! A few of my mum friends experienced exactly this, mula-mula okay je, pastu second trimester terus jadi tak lalu. Mine was the opposite tapi I remember one friend saying hormones change lagi mid-pregnancy, and sometimes nausea actually comes back even if you were lucky first trimester. Best to mention it to your doctor sebab sometimes it could be something like low iron or heartburn yang makes eating harder, but honestly macam normal je kalau hormones tengah shifting.