I don't know what's going on.

I woke up feeling fine, stomach a little upset but I took a shower and headed down stairs. 
My lower back to the left side is in agony.
I can't lay down or sit or stand without balling. 
I've never felt this before with my first pregnancy.
It's like a stabbing shooting pain and I'm crying my eyes out.
Anyone felt this or have any idea what's going on.. I'm almost 11 weeks.
I'm frightened to tell someone...