Pregnant tapi upt negatif

Hi. Nak tanya ada tk yg pernah pregnant tapi upt negative? Tapi rasa perut mcm membesar. Period tk irregular.. lmp 4/1 tapi period 3-4hari mcmtu je.. 24hb,25hb check samar2. Minggu ni check naik line. Tapi perut mcm something and betul2 mcm simptom pregnant (mcm simptom pregnant anak sulung dulu) siapa ada pengalaman share la ye