Sa 18 weeks and 4 days, medyo early pa talaga, pero maraming moms sa circle ko na nakakita na ng gender around that time, kahit 50/50 lang talaga ang accuracy kaya baka kailangan mo pa ng follow-up ultrasound sa 20 weeks para masigurado! Better to wait a bit pa if you really want to be certain, pero kung confident ang doctor mo based sa position ng baby, sometimes they can tell na. Best to ask your OB directly kung gaano ka-clear ang view, some doctors are more experienced sa gender determination kaya mas accurate.