This is your second session in my office. The topic is exploring your gender identity. You haven't felt like you belong in your own body, but you're afraid to do anything about it. Fortunately for you, I have connects in the medical world, and my doctor friend has agreed to let you try his new medicine which is still in the experimental stages. It's an amazing medicine, in that it's the first of its kind to "scan" your emotions and brain chemistry, and effect those changes in physical form upon your body. So if you feel like a woman, it will change you into a woman.
Now, don't worry: the effects are temporary and will wear off in a few hours. You'll only change as much as you want to change, and you'll be perfectly safe exploring what it's like to have a female-presenting body.
You take the liquid medicine, and as it begins to work, I explain the changes that will happen in your body. You haven't changed much yet, but I assure you that once you're home and feeling more comfortable, the changes will progress more quickly. I've put together a care package of some lingerie and clothing of mine, which you're welcome to try on in the comfort and privacy of your own home. I encourage you to explore your body as it goes through changes, and "explore" your body more thoroughly (ie masturbating) once the changes are complete. You have my phone number, and you're welcome to reach out if you're afraid or don't know what to do. But I truly believe this is the first step on a path to healing, and it will help you understand more about who you are, and ultimately help you make some decisions about your true nature.