Cody~~
The statistical likelihood of your gender dysmorphia being associated with something else is pretty low but not non-existent. The conditions of which I'm aware that have gender dysmorphia as a symptom include depression, bipolar, and schizophrenia. Given your age and the amount of panic you feel, there's the outside chance that you might have something like that going on. (The early college years are a time when lots of things can become triggered in the brain due to hormonal shifts.) However, I AM NOT A THERAPIST, so please take this post as informational only. I am not saying I specifically suspect that's what's going on with you. I'm saying your age and level of panic suggest there could be a lot going on and that a good therapist can help you safely explore what the real answer is. Keep in mind that even if you are transgendered, you don't necessarily *HAVE* to transition. There's a lot of options for you to help you find a way to cope with your negative feelings about your female body, but only a therapist has the training to help you do this well. In fact, the idea that gender dysmorphia could be associated with something else was something I learned by going to therapy with my wife.
I really hope you seek some help soon. As a person who deals with high levels of anxiety daily (thank you, autism!), I can say that it well and truly sucks to live in a state of panic all the time. Therapy and meds have been good for me at various points as have some natural solutions, but whatever it is that I'm doing, it's all in the name of living a better quality of life and being more functional.
I hope this helps you more than it scares you. I know the thought it could be one of those other conditions might be pretty upsetting, but the alternative to exploring all possibilities is to live forever in the trapped state you've described.
Here's to courage and self-knowledge!
~~E