Needing advice to tell him

Long story short I have a bad stuttering problem, I’ve had it since I was 9 years old. I just went to see a new therapist and she was shocked I haven’t told my husband about this. I try so hard to hide it from him. The reason I haven’t told him is because I’m so embarrassed by this. I’m so afraid to open up to him about it. I told the therapist that it was even hard for me to tell her about my issue. I’m not brave at all when it comes to this to have to tell someone this. Not just someone but my husband. I’m so scared to tell him. It’s just embarrassing cause I can’t talk on the phone like how do I say I never talk on the phone around you cause I stutter . I’ve had phone interviews that I couldn’t do and I’m so embarrassed to tell him I couldn’t cause I can’t talk on the phone. can someone please give me advice on how to tell him? I’m legit so afraid. I’m not brave at all