Ay sis, okay lang yan, Duphaston is actually safe in pregnancy and commonly prescribed ng OBs for spotting prevention and low-lying placenta situations, so don't worry! A few of us sa group had the same hesitation kasi ng what we read online, pero honestly lahat ng meds may "side effects" listed kahit super rare, and your OB knows your specific case (especially with the low-lying placenta) way better than Dr. Google hahaha. Your friend probably took it for a different purpose (like to induce period), kaya different context talaga, sa pregnancy it's used as support lang, not to cause bleeding. Since you trust your OB and she explained the why, I think you're good to take it for peace of mind during travel, bes! Just follow her dosage exactly and if anything unusual happens during the trip, reach out to her agad okay?