Baby weight = depression

I have been feeling depressed this week, due to the fact that i look TERRIBLE. I know it's only been two months but I know I am very overweight now since having my second baby. I can't seem to look good in anything I wear and my mum keeps telling me she thinks im bigger than her *sigh* it's so depressing when people around you keep telling you that you are bigger than before..in my case ALOT bigger! I have been thinking about joining the gym to try and shake some weight off me but as i stepped on a scale today I realized I have gained more than 26 kilos with my second baby. Why oh why has my body turned against me?! Why can't my body realize that I want to get rid of the weight when my baby is born??! Arhh so frustrating!! I can't believe I gained soo much weight when my baby was only 2.725kg when she was born! How unfair is that?! I could have at least had a bigger baby!!! huhuhuhu im so sad now =(