Pubic bone

Sarah • Wachacha crew and counting! Back for round 2!
Hey ladies. I'm 3 days from my due date. FTM. Just about an hour ago or so my pubic bone started hurting. It's hurting pretty bad like when I walk and stuff. Not to much when I sit. I don't feel that I have dropped. Is it just her head on there or could it be the start of labor or anything else? 
Thanks!