Aww congrats sa pregnancy! Rashes sa tummy during pregnancy are actually super common, hormones, skin stretching, heat, lahat yan possible culprits, pero best talaga na i-check mo with your OB para sure kung ano exactly ang cause, kasi may conditions na kailangan i-address agad. A few of us din nag-experience ng ganyan, and pag na-identify kung anong type, mas madali i-manage, some use gentle moisturizers, some need prescribed creams depending sa doctor's advice. Hang in there, mama!