20 weeks 2 days maybe TMI??

Hi ladies! Just a little concerned as I didn’t have this with my first pregnancy. I’m 20+2 right now with baby girl and for the last week and a half I’ve had what feels like horrible rectum/anal pressure. It feels like a tennis ball down there. I’ve had my 20 week ultrasound since it’s started and they didn’t mention anything looking abnormal. But this pressure is insane and it’s mostly when I’m up and walking. I work 12 hour shifts at a hospital so sitting and resting isn’t really an option. I’m just curious if anyone else has had this this early on?? 😭 I don’t know what to do besides deal with it