I had the opposite actually, as I wasn?t huge. However my baby was a normal healthy size (well, very long, though slim). I am tall though so there was perhaps just more room for the baby and my bump didn't look as sticky-out as some. I only got the high sticky out bump that leaves you breathless at around 34 weeks and my baby dropped at 35 weeks so I was really glad as it meant I only had one week of breathlessness!
I had endless "Ohh, you're not eating that are you"! (decent cheese, seafood, etc etc) and also, from the moment I told people at 12 weeks that I was expecting ?Ooh you're not STILL cycling are you"?! I only cycled to 32 weeks, after that, due to position on road bike and position of bump it just wasn?t possible, plus the fatigue got on top of me at that point and the weather was rubbish so I didn't cycle again till 3 weeks after baby arrived, but basically form the moment I told anyone till I stopped completely, I had that reaction, which was really, really irritating, as I was fully aware of the importance of maintaining my health and fitness for as long as possible into pregnancy, and also that cycling is a particularly useful way to get around when you cant actually walk due to the pain from PGP and twisted sacrum from which I was suffering. It didn't hurt at all when I was on the bike (except mounting/dismounting) so getting around by bike was pretty much pain free.
I did also get a few vauge but leery ?jokes? suggestive of the fact that I must have had sex ? to which I felt like saying ?Yes, well I have had sex a few times before getting pregnant you know - many people do!? You are so right, some people, often people you don't even know, feel the need to comment - and they really, really shouldn't!