32 weeks pregnant and feel very sore and uncomfortable?

I'm 32 weeks & 2 days pregnant with my first so this is all new to me. In the last couple of days i've been feeling a LOT of pressure down there and feel as though i have a water melon or some thing between my legs. I've started waddling and all this pressure makes it difficult to walk around, i've also started to get back ache and terrible stomach pains on and off. Is this normal at 32 weeks?