When I called my grandparents on speaker phone to tell them I was pregnant my cousin was there and didn’t say a word, he actually rushed my grandpa off the phone because they had to go grocery shopping… I later found out that him and his girlfriend are never having children for the reason you mentioned. I’ve actually not had any of my cousin or aunts/uncles on my moms side congratulate me or anything, turns out my cousin has been telling everyone how “stupid and selfish” I’m being. It of course hurts but I know if my cousin saying this is enough for them to basically disregard that I’m pregnant means they weren’t ever going to be that supportive anyways. Just focus on the people who truly support you