Random sharp pain on inside of leg?

Kayla • ❤️Roman Anthony born April 27th, 2017 at 1AM❤️
35 weeks pregnant, I keep getting a random sharp pain on the inside of my upper thigh that hurts super bad. Sometimes it's when the baby is moving and sometimes it's just random, does anyone know what this could be? Is it my hips stretching or whatever getting ready for baby to come? Lol l