Sharp pains

Nicole
I'll be 38 weeks tomorrow and for the last couple days I have had sharp lower abdominal pains on and off. Baby has always been very low, which is uncomfortable but today the pain was decent enough where I couldn't stand up straight at times. 
Anyone else experience pains like this? I've had Braxton hicks before but that usually starts in my back and travels to my front. No blood or mucus plug.