Just in the last week, I've noticed that I've been eating more and getting hungry all the time. I'm at about the same point in pregnancy as you are. Since I hit 24 weeks today I checked a website which gives pregnancy updates and the first line for 24 weeks was "Bring on the bulk" lol. Apparently bubs gains about 170 grams in this week alone and will be packing it on like crazy in the next few weeks.