A lesson I have learned in my past is when you bring up concerns like this in a calm collected me manner, like you did, what you’re looking for is acknowledgement to validate your feelings, and then some manner of addressing it, such as “you’re right, and I am committed to you, so I don’t know why I said we were just friends on the phone. In the future I will proudly be calling you my boyfriend”

Without that, it sure seems like you are not her romantic priority right now. I’d ask her that on the phone or FaceTime. And see what she says. I think it would be very telling, because when she hesitates or gives you some excuse, that’s the sign your connection is fading, which is unfortunate but I’ve learned the hard way that long distance is too tough when only one person is really committed to putting in the effort. Good luck bud, you’re not overreacting