BW,
First, I'm sorry you're having such a hard time, its tough enough getting through when you have support but hang in, it won't always be like this.
I know calling was a HUGE issue for me. I made exactly one emergency call to my first T who I saw off and on for over 17 years, but my current T has been really encouraging about me calling in between sessions if I need to because we're working with such strong attachment issues. Specifically, I learned that when I feel really needy NOT to go towards anyone, its too dangerous. But a healthy response in a human being is actually to move toward connection, so my T encourages me to call him so I can change my behavior when I feel needy (going towards instead of away) and experience going towards as a good thing. Each time it happens, the experience re-wires a little tiny bit of my brain until eventually, I think and hope, the feeling of danger will go away. I know its gotten better than it was. Pretty much a week doesn't go by that I don't call him at least once between sessions. But it was incredibly difficult in the beginning because it was so scary, and uncomfortable. And frankly, I felt like a wus for needing to call. So, one reason you might be feeling so much turmoil over calling is that its kicking up stuff for you, some of which is possibly pre-verbal which makes it kind of hard to express.
So it could really help if you call.
Hope this helps! But one more thing, I realize that just because its that way for me doesn't mean its the same for you so you may decide not to call. In which case, I don't want this post to cause any pressure.
AG