Yeah, I've noticed this too. My back hurts a lot from leaning forward to do things. And last night I dropped a piece of paper and was straining to bend down and get it and DH was like "you're pathetic" and got it for me. Most of the time if things fall on the floor I have one of the kids pick them up. Unless I'm doing there crawling around cleaning up, I don't like individually bending down.
We don't have a dishwasher, so I do dishes in the sink and its getting harder now that the belly is bigger. My arms are short as is, and my belly puts me a greater distance from the faucet. I really have to reach and it kills my back. I haven't really bumped into anything though.