Alhamdulillah, congrats! 20 weeks dah rasa gerak, tu bagus sangat, some of us (especially yang berbadan besar macam you mention) rasa later sikit, 22-24 weeks baru obvious, so don't worry kalau teman lain dah rasa awal. Yang penting baby gerak aktif day by day, tu sign yang bagus! Soon you'll reach that stage where you boleh tahan gerak dia sampai perut like waves haha, so exciting lah!