Hi sis! Some tummy discomfort in the morning during pregnancy is pretty common, a lot of us moms experience it, especially as baby grows, but if the pain is sharp or happening every single day, better check with your OB para sure lang, kasi 4 months pa lang kayo at gusto nating lahat okay ang baby mo. One of my mum friends had similar concerns and her doc just said it was ligament stretching, pero hindi lahat ganyan kaya mas okay na konsultahin mo agad yung doctor mo para peace of mind. Praying all goes well with your pregnancy!