Adoi, 4 hari tu memang lama sikit! Kentut kuat tu actually good sign, means ada gas movement dalam perut, so tak completely blocked lah. Tapi sebab first baby, I'd say better to check with your paediatrician or clinic just to be safe, terutama if baby seems uncomfortable, tak minum well, or perut keras/bloated. A few of my mum friends had similar situations at that newborn stage, sometimes boleh try tummy massage or warm compress, tapi doctor confirm dulu la. Jangan stress, usually common lang, but best lah verify dengan your doc.