Weird back pain

Samantha

This is going to sound weird. Lately (I'm 13 weeks) if I sit on the couch with my legs bent, when I go to stand up I have a sharp pain in my lower back and I can't even stand up. It's like my legs give out, after a few steps it's okay but still hurts for a minute or two. I'm really not sure how this would be pregnancy related, but I've only had it the last 2 weeks or so. Has anyone else experienced this or know why it's happening?