Question as first time mom

tuwing kelan po ba dapat mag pa check up sa ob? Once evry trimester? Monthly? Or pag may nararamdaman lang kakaiba habang nag bubuntis 😅 Wala po ksi akong morning sickness or kahit anong masakit sakin. Twice palang me nag pa check 10weeks pregnant. Okay lang ba yon? #firsttimemom