First time mom question? Helpppp.

Karissa • I'm Karissa, 21 years old, pregnant with my first child, a baby boy, who is due August 28, 2016!!
I'm a first time mom and I'm 35 weeks, so I'm not sure what's normal or not. I've been having these random sharp pains in my vagina, mainly if I'm standing or walking around. Especially when the baby is shifting positions. Is this normal? I haven't had the time to ask my doctor yet.