Has anyone has a knee replacement and been pregnant after?? I had my knee replaced (twice, actually) when I was 15 because of cancer. I'm 14 weeks pregnant and have been have a lot of hip/leg pain in the leg with the joint replacement. Just wanted to see if anyone else out there has had any issues or problems or is in the same boat. It was mostly sciatic pain but has since developed into more hip pain over the past few days.