Also a mom! I adore NYDJ jeans. They're mid-waisted and they really hold you in, but they're comfortable and they hold their shape really well -- the knees don't get all loose or anything. On the other end of the spectrum, lately I've been loving No-Nonsense jeggings. They're $15 a pair and they're really comfy and cute.
As far as tops, the nice thing is that right now there are a lot of very forgiving tops for women whose mid-sections aren't runway-perfect. (What the hell did new moms do back when babydoll tees were the thing?) I'll link some examples from Amazon US, and maybe you can find something similar from a Canadian source.
Shirts like:
this Guess boyfriend tee that have detailing around the neck and an interesting cut at the sleeves while having a little drape at the belly
I've had a lot of luck with Lucky Brand tops like this one. They're structural, so you don't feel like a total slob, but the structure is forgiving.
I'm not a huge fan of shark-bite cuts, but the fit of the top of this shirt related to the swinginess of the bottom is very forgiving and flattering.
I also feel like a big part of feeling complete is wearing a little makeup, doing my hair (really simply, but it's neat), and wearing earrings.