Did I rush into cutting contact with her?

Two weeks ago, I suggested to my girlfriend that we should cut contact because I noticed she seemed to be losing interest and acting distant. Despite asking her about it several times and her insisting that everything was fine, it didn't feel that way to me at the time. Now, looking back at our conversations, I'm starting to wonder if I was just feeling insecure and made a hasty decision to cut contact. Even though I was often the one initiating conversations, she still responded promptly and entertained me, although not with the same enthusiasm as before. If she missed my calls, she would still return them, but our conversations weren't as long or effortless as they used to be. Now I'm torn between feeling like I rushed into cutting contact and missing her terribly, and wondering if my decision was right. If I were to reach out to her now, how do you think she would react, and what should I say?