Cheating Partner

Good evening mga Meee.. I have this kind of problem and i need some advice . My partner confess na meron syang kaharutan na iba.. At hindi lang isang beses may nangyari sa kanila .. They have contact each other halos everyday .. Ive try na kumalas na sa pero ayaw nya .. Kahit anong mangyari daw di daw kami maghihiwalay , walang hiwalayan daw na mangyayari .. Hayaan ko lang daw muna sya for the meantime at lilipas lang daw for his desire lang daw. What should i do mommies? They still contacted each other and its hurt so much. Im currently 36 weeks pregnant at sobrang stress nako. #advicepls