Not sure if its normal, but it sure sounds like your sciatic nerve. Hope you get relief soon
I had a completely numb left leg and sharp nerve pain in my back, so I went to an acupuncturist who specialises in pregnancy. I've had two treatments and feel 100% better. Treatments are kind of yucky feeling but they last an hour and my legs feels (relatively) normal again!
It does sound like your sciatic nerve. I went to acupuncture to induce labor and it worked great. I've also heard it's good for other aspects of pregnancy so maybe as above it could help you.