38weeks

Hi mga mumsh exactly 38weeks po ako today 2nd baby, jan 7 nagpa bps ultrasound ako and base dun si baby is 34weeks plng, and maliit lng din po si baby estimated weight nia is 2.5kilos which what i exactly plan and prefer para madali ilabas hehehe tapos ask ako ni ob kng sure daw bko s lmp ko which im also very much sure of, alin b mas accurate mga mumsh ung lmp or ung latest ultrasound? Tia!