confused about EDD

Hi everyone 👋 I'm just confused with regards to my EDD, first time mom din kse ako. Base on my LMP, im 26 weeks and 4 days pregnant now. I wasn't able to have my Trans V kase nung time na sched ko nag start ang lockdown. Nabasa ko kse dito na magandang basis ang first trans V. Kaya lang wala ko nun 😊 Then i had my ultrasound (first ultrasound) last week. And base on my ultrasound im 2 weeks ahead sa count ko. So by now nasa 28 weeks na ko. It says there din that my EDD is october 27. While according to my OB, which is nag base sya sa LMP ko, my EDD is November 8. Di ko pa natatanong OB ko after mag ultrasound. Once in a month lang kse ako pumupunta sa knya. My question is, alin po ba ang mas nasusunod or mas accurate? Thank you sa sasagot po 😘