I'm 31 weeks tomorrow (first pregnancy) and for the last week I've been getting a really strong feeling of pressure just above my pubic bone at the bottom of my belly. It's not painful but definitely not comfortable either. Baby was head down at my last OB visit nearly 3 weeks ago and I assume she's the same now - no real changes to pattern of kicks etc.

Any idea what I'm feeling? Is it just baby's head pushing down? Anything I should be worried about?