He dropped the D word!

My husband just dropped the D word today. He said it as if he was joking but I’m not sure as he always asks if his daughter is really his. The D word I’m talking about it DNA test.

So my husband is half Indian half Italian so he is part brown. He and everyone in his family have dark eyes and dark hair. I have brown eyes as well but our daughter was born with bright blue eyes and fair skin. She is almost 9 months old now and her eyes are still so blue. My dad and grandpa both have blue eyes so that’s definitely where she got it from. My husband always jokes saying “who’s her real dad” and “your not mine you don’t even look like me!” It hurts when he says that because she is 10000% his she has the same facial features as him it’s just her eyes and skin tone don’t match him but not all kids look exactly like their parents. It bothers me because I don’t know if he’s actually just joking around or if he truly thinks she may not be his. When he mentioned DNA test today my heart sank. He did say it in a joking g way but still it’s hard to tell. She’s totally his and I have no idea how else I can prove it. Plus I would never cheat and he should know that. I’m literally as loyal as they come.