I need emotional support

I just found out I have a different biological dad. I'm panicking. My husband is supportive but I cant post on Facebook just yet because of other family members might freak out too. I have so many questions regarding family medical history and other issues I thought I knew. I found out through 23 and me DNA site and I found my long lost half brother. Anyone have advice on this issue is recommended. I still love my dad, the one that raised me and my mom. But I'm 28 years old and just now found out.