Sayang, sakit perut macam sengugut tu mmg biasa around 20 weeks sebab ligaments stretch, tapi kalau very painful, terus-terusan, or ada spotting, kena check dengan doctor cepat-cepat okay, better safe than sorry especially first baby. A few of my mum friends experienced the same thing and most turned out fine after the doc cleared them, tapi definitely jangan delay.