Telling disapproving dad about pregnancy #2 any advice

Hey ladies I’m looking for some advice on how to tell my dad that I’m pregnant with baby number two. I have a 14-month-old son but both of these pregnancies were planned I’m really happy to be pregnant but I know my father would not be happy either way because I’m young I’m 21 years old he loves my fiancé we’ve been together for more than five years but just knowing my dad I know he will be unhappy regardless ... he’s a military man and he raised me and my sisters as a single parent. I went to many miscarriages before this baby and it’s giving me anxiety to tell him.. I just know he will be unhappy any advice is appreciated!