18 weeks and vagina bone

So I’m 18 weeks and my pelvic bones (vagina area) lol have been cracking and killing me. Like I’m waddling because it hurts so bad. I can’t move it bed bcwause it hurts so bad. I didn’t think it would hurt this bad if I’m laying down and clench my legs together it cracks wtf am I the only one so early this is happening to? I’m nervous because im waddling because it hurts so bad every day. I tried to “run” from

My car to my house with my toddler because it was so cold and I couldn’t I felt like my bones were going to break!!!!