I'm 13 weeks. In the past 24 hours I've developed this ache on my left outer thigh and on the outer side of my left butt cheek. I also have an ache around the back i the leg into my pelvis. It's all located on the left side. My question is-anyone else experience this? I don't know if it's sciatic or not. I will wait until Monday to call the dr. It's also sorr to touch in certain areas. Not horrible just sensitive.