Eh, watermelon memang boleh trigger gas especially when pregnant, perut kita lebih sensitive sekarang because semua slow down! Muntah-muntah plus kembung + kena duduk je untuk rasa lega sounds like gastric or just trapped wind, both common la at 24 weeks. Kena check dengan doc cepat-cepat sbb muntah terus-terus ni bukan normal, especially kalau berlanjut, kena pastikan baby okay dan you're staying hydrated. Dalam tu, try makan small frequent meals, avoid heavy or oily stuff, and drink ginger tea or warm water slowly, a few of us preggy mums swear by ginger, really helps with the bloating feeling.