Girls, when did your belly start dropping and how many of you have giv…

Girls, when did your belly start dropping and how many of you have given birth? I woke up this morning, went downstairs, took some tests, and came home to see that my belly has dropped...since the morning and didn't pay attention...my hand can't fit in, but half is definitely...33 weeks pregnant...with my first pregnancy I went until delivery with an undropping belly...and now it's like this.