People struggling with infertility

My husband and I struggled for a while to conceive, but we got pregnant! We are so excited but I have a brother and sister in law who have been trying for years still no success. My question to you is how would you want it to be worded when you are told the news. Even though we struggled I never felt jealous of others that just not my personality but this brother is much older than me and they had a bad reaction to my other sisters pregnancy 😬 so how would you want to be told. I’m dreading telling them because I want this to be a happy thing and I know it’s going to devastate them. (Exactly what they told my sister when they announced 😭😫) just help please I want to be sensitive to their situation but I want it to be happy for us too