Haaa I feel you lah, 19 weeks is such a long time! A few of my mum friends took Utrogestan during pregnancy and honestly most of them asked their gynae the same question, best to clarify with your doctor because timing depends on how the medication works for you specifically and whether it affects absorption or efficacy (some docs say a few hours is okay, some prefer you wait longer). Tapi most said their doctors were quite practical about it since it's such a long journey, jadi don't feel bad asking, they've heard it before! Fingers crossed your doc gives you a reasonable answer because yeah, lama sangat kalau kena avoid completely.