Meet his mother...terrible..

So, I met his mother today. It was terrible mainly because I was able to tell that she wasn't happy for some reason like, i felt her vibe/mood..I said "hi, how are you." She said "hi, I'm good. How are you?" And I said, "I'm fine, thank you!" And then for the whole car ride, it was seriously just dead silence overpowering and I seriously felt out of place. Once he and I finally reached the place, I said bye to her and she said "bye, have fun!" And that was it...I never felt so out of place before. Whenever i meet someone's parents, they always instantly like me...I have a feeling that she doesn't like me. Smh, like...what am I suppose to say to her? She looked mad lol... What would you have done?