I want to her get pregnant again

Hi moms as some of you might now it'll be a month on the 21st of this month that I lost my hadsome baby boy at 6 months of pregnancy. I wanted to ask if any of you know any type of vitamins or anything healthy that can make my uterus stronger and healthier. I want to try to get pregnant again but I want to her my uterus healthy first! Anything you girls can help me on? Btw here is a pic of my precious angel ❤️