i've also put on 7kg and am 28 weeks.... i feel HUGE. my stomach is enormous and most people think i only have a few weeks to go, when reality is i have 3 months... i am only short so i suppose the baby has nowhere to go except OUTWARDS... i was huge with my first also... i think i put on about 18kg with my first which i think is way excessive... if i could keep it to around 12kg this time i'd be happy, but in reality i'm doing nothing to watch what i eat.... i just know that the more i put on the harder i am going to have to work afterwards to get it off, its not easy, so if you can try everything in moderation.... easier said than done...
i've also just started swimming 3 times a week which hopefully might help.... i am not a swimmer at all but have managed 18 laps and am increasing it by 2 each time.... i suppose its better than nothing.