Tailbone pain??

Becca
In the past day I've had a sudden onset of tailbone/coccyx pain. I think i injured my coccyx in the past because before I got pregnant I would get flare ups where it was tender. This pain seems more consistent/painful. I read something saying it could be related to pelvic floor shifting, but wanted to see if anyone else had experienced anything similar? 
(28 yr/9 wks/1st pregnancy