Weight gain

Alright, I know that I'm probably being stupid and just throwing myself a pity party, but, I'm almost 11 weeks and have put on some weight. Is normal, I know, will be putting on more, etc. etc. My little sister lost weight and gave me her fat pants (be honest, you all know what those are) and they fit perfectly. It just bummed me out. I go on long walks almost every day, which makes me feel better.  So, since we are all in the same boat, if you guys could offer some encouragement, that would be awesome.