How do I know my baby is engaged? (37 weeks + 4 days pregnant) with first baby?

With my 1st pregnancy I never notice my tummy dropping at all but when pregnant with a boy you usually carry them a little lower already. But when He was engaged I could feel a lot of pressure in the pelvic area and I waddled too, lol. I really didn't know that I was engaged until I went to the doctor. Also it feels SO weird when they have their hiccups, honestly feels like your cooch has the hiccups, lol. My husband would tease me all the time b/c I would be like out of the blue and say "uh oh my cooch is hiccuping" had to have some sense of humor right?!? Another sign is that you pee SO much more then what you use to. I swear it felt like i was peeing every 15-20 minutes. I would say for sure your little one is engaged!! yay!! My son did this when I was about 33 weeks and had him at 38 weeks, was induced b/c I had pre eclampsia, but they can stay that way for a while. Take care and congrats to you!!