Not back ache, but back pain... lower back but not my spine, and in two definite specific points on either side at the back. If I sneeze, it hurts. My legs give way when I stand up if I have been sitting too long or when I get out of bed... and I can't walk properly for a few steps. Is this normal and should I stop whinging or is it something I need to see someone about? I'm only 16 weeks and am worried about it carrying on as I get heavier...