Is it okay that I (21F) do not want to send nudes?

I’ve been dating my boyfriend for almost a year and so far we’ve done just little bits of long distance for less than a month. This time we’re doing a month and a half for the time that we’ve been apart he’s been begging me for nudes really often. We were pretty active sexually when we were together. I don’t feel comfortable at all with sending nudes or doing anything on call, I’ve shown a little bit of boob or butt here and there but I just don’t like the feeling. I feel anxious and I just don’t like it. It’s got to the point where I don’t want to FaceTime him anymore. He keeps asking if it’s got anything to do with his physique but I’m just not like that. I’m going to visit him and I’m going to be leaving again, but this time I’m going to be leaving for five months. He keeps asking me if we’re really not gonna film anything when we’re together or I’m not going to send anything. I just feel really pressured and he keeps asking even when I’ve told him that I don’t think so. He asked me why I don’t feel horny and if I’m relieving it. I’ve never really masturbated or done things like that and I don’t feel the need to, I just like having intimacy when I’m with him. Am I in the wrong for not wanting to send anything