Pressure

Pretty sure it's normal, just wondering if it's a possible indication of labour approaching!!
I'm 35 weeks, and my daughters always sat really low!! The lighting crotch has been killer lately xD
But I've noticed more and more (basically every time) I sit on the toilet there's SO MUCH pressure!! Like trying to do number 2 is a struggle (not constipation, just so much pressure vaginally it's too painful!!) even just sitting there causes a ton of painful pressure!