Cleaned the sitting room and hallway this morning, didn't do much just hoovered and moved a couple of things around like the coffee table and toddler table. So not much at all really, but ever since iv been having like these light little cramps coming along the bottom of my stomach, been happening for like 4 hours. They hurt more when I get up and walk. Does this sound normal and nothing to worry about at 33 weeks? Don't want to be calling my midwife over the littlest things......