Pressure

I’m 3 days overdue and for the past 4 hours (since I got back from a walk) I’ve been feeling so much pelvic pressure which is really uncomfortable and it’s seems to be getting better now as time is passing and I’ve had this feeling before but it’s never lasted this long and its usually just when I walk but now it’s also when I sit. It’s also making me feel like I need to pee frequently when I don’t. Any ideas if this could mean labour is close??