I know what you mean about the weight gain. I was so worried I was going to get huge, as I was already carrying a few extra kilos when I got pregnant which shelved any diet plans. To top it off, around 22 weeks I was diagnosed with symphysis pubis dysfunction as well! Then sciatica..! My mobility has been awful this pregnancy as a result. Luckily and quite amazingly I've only gained 6 kilos and I'm 32 weeks. Mostly due to eating smaller meals...not by choice mind you, but because I'm so squashed and uncomfortable I can't breathe when I eat a lot!