Oh squid. Hugs. Hugs. Hugs. Sounds like your evil cold has really taken your mojo away. You've been such a cheerleader for everyone else and I for one have really needed that, and appreciated it.
On the weight thing, for starters, I wouldn't mind betting that your boobs are bigger, so that accounts for some of it. And I'm told that breastfeeding needs you to have some fat, so folk often can't lose the last amount until they stop breastfeeding. Also, most importantly, your body is doing a terrific job of feeding jess and helping her grow. You are exercising and doing all the right things, so it will come good. This too shall pass.
Perhaps a good film and a snuggle and snooze on the sofa would help? And hopefully you can make like the queen and have an official birthday later.