I was told at a check up that she had started to engaged, i was 28 weeks(so very early apparently) but i didn't really notice a difference except the fact my bump was lower. As she engaged more, i felt a lot of preassure and needed to go to the loo more. Then at about 38-39 weeks i had extreme pelvic pain, so bad i could hardly walk, i was hunched over in pain. So went to the GP and found that she had fully engaged. So for me, there was a LOT of pain involved. I also found i could breathe better and my ribs didnt hurt as much.

Edited to add: I also was walking around and then suddenly felt like she was going to fall out. It felt really weird and i crossed my legs lol. That was a couple of days before i found outshe was fully engaged.