So much pressure and can’t pee

I have so much pressure down there. I’m 35+1 with my second baby. I just tried to pee but I couldn’t even. There’s just so much pressure it’s unreal. And keep getting pain and inconsistent contractions. Her head feels SO low it’s insane; I’m honestly scared. I don’t want to call OB for no reason since this is my second rodeo, but I’m afraid she’ll just come flying out lol