perut rsa bsar

hi mommies , normal tak klau perut trasa lbih bsar cm preg 4 months ? sbb sy tak sure lgi yg sy preg atau tak , last priod is 26/09 then patut priod balik 21/10 ni tpi dah delay 3 hari ... 19/10 sy ada cek upt and mnunjukkan yg ia pstif , sy confuse .. please tlong jawab 🥲