Pregnancy announcement after loss

I was just wondering when everyone has announced their rainbow pregnancies after their loss? I'm 20 weeks now and our family and my work all know and it's obvious to anyone who sees me that I'm pregnant but I haven't really been talking about it and haven't announced on social media. Part of me feels conflicted because of how closely spaced this pregnancy is with the loss of my son. I want to keep honoring his memory and feel like after I announce this pregnancy everyone will think I've moved on. I'm completely happy and excited for this baby but want to keep my son's memory alive too....