Pelvic pop

Taylor • Navy wife - early 30`s
Okay so call me crazy, but last night I swear I felt a pop in my pelvic bone and what to me felt like the baby sliding down lower.  Today I've noticed everytime I stand there is more liquid discharge being released and I can barely hold my bladder an hour.  I'm 36 weeks 3 days.  Just wondering if anyone else has experienced this.