To parrot the usual advice here, a gender therapist would be very helpful in sorting this out. They can help you with anxiety as well, maybe get to the root of it... Transition isn't something to take lightly, but if you need it, it isn't something that can be ignored without having some kind of negative effect, depression, anxiety, etc, no one would choose to be trans, they'd rather have been born in a correctly sexed body. There are options other than transition, but transition seems like the best option.
Not to trigger your anxiety, but that story is repeated over and over on this forum, right down to the anxiety, fear, denial, etc. Seems common threads for trans who don't transition early.