constantly feel like I need to poo!!!!

Hello, my first time posting on anything like this and sorry if it's tmi but I constantly feel like I need to poo!!! This is my second baby, I'm currently 11 weeks and 2 days pregnant and I have pressure really low in my back like I need a bowel movement but it's not the usual feeling I would get when I needed to go before I was pregnant. I know this sounds silly but it's like that feeling you get when you think you need to poop in labour coz the baby is moving down the birth canal. Has anyone else felt anything similar? Bit worried. Thanks in advance 😊