Belly had deff dropped

Melissa • Mummy to two coming 3 (due August) beautiful children.
So over this last hmmmm week or so I'd been posting about diff changes I was having like Braxton hicks, cramps, back pain etc, and over this last few days more so it has become excruciatingly worse, to the point where I can't really walk very well, it feels exactly like sciatica and like someone has ripped my hips apart. And I've deff noticed a change in belly, it's deff dropped a lot lower, now if I rest it fully, it hangs down and causes more pressure on my leg. So I'm constantly having to hold my stomach muscles in to hold belly up, and it's causing pressure on my back. What does itean when belly drops, does tHat mean labor is coming soon?