Waist Trainers!!!

Hello Ladies! 
We all have goals for this 2017 one of my many goals this year is to get my body back but especially my waist. 
I am due in 3 weeks or less as my doctor said and I'm looking to buy a great waist trainer so when I get back on track with my body. I would love if you ladies recommend me proudcts and also safe waist trainer websites so I can check out their waist trainers/fajas. Also please recommend me a protein and supplements that are safe while breastfeeding. 
Thank you, 
And much love to all! Xo ❤