Bf wants paternity test..

We had just got into our relationship for a few months before I got pregnant (I’m due any day now) He claims he knows it’s his but just to make sure he wants to take it. Part of me understands but the other part of me is just like what the fuck do you mean like it just made me feel bad that even a slight percentage of him thinks this might not be his child. I’ve been 100% faithful in this relationship and I’ve given him no reason to think I’ve been unfaithful to him.. am I wrong for feeling idk betrayed isn’t the right word but it’s something around there.