Hi :D I'm 35w5d and I'm trying to understand what happening 
For some reason today I started to have pain when sitting, around the pelvic zone. It's not muscular, I don't think is UTI, it's more like when you have digestive problems (but it's not the case).
It is better when I stand but if I stand for a bit longer I start to have low back pain (I started to have back pain yesterday afternoon, I was fine before).
I feel like the reason is my baby pushing on the bladder (she is already in position). Has this happen to any of you?
Sorry for the long post and thank you for any suggestion or experience shared 