Ahh tu normal je, especially kalau tengah baring! Perut kita bunyi bila ada gas moving around, especially after makan or kalau perut kita active doing its thing. A few of us mommies kadang kena jugak, terutama malam time, haha, one of them swears it's worse after she makan heavy dinner. Try minum air banyak-banyak and walk around sikit, usually membantu. Tapi kalau it keeps happening with pain or other symptoms, better check with your doctor lah just to be safe!