the tightness could be gas since you're pooping a lot, I know when I get constipated it can't make me feel tight, and even my back hurt lol

agreed with cleaning itself out

yeah, that's normal. someone on here last night told me that the pressure in your crotch, is called lightening crotch. lmao (I have the same thing, it feels like my little boy if going to punch out of my vagina) lmao

If im correct its your body cleaning itself out

baby could be going lower in the birth canal. lol idk bout the poo.