VCH TransHealth - Feminizing Hormones (Types, Effects, Risks)
I just wanted to add this link as well, not sure why I didn't post it originally. For advice, I can only reiterate about getting regular tests/panels done to keep an eye on your levels -- you can request these tests whether you have a prescription or not, but likely the doctor or walk-in doctor will ask why.
A gender therapist is great, not just to help with any possible letter/referral requirements in your area but also for depression, emotional rollercoasters, as well as with coming out and social transition. Local support groups/clubs and/or LGBT centers are positive options as well.
It's always a good idea to research as much as possible about hormones, side effects, risks, etc etc. The More You Know!
(Queue rainbow)
I think it's important to keep in mind that the physical changes and our journeys vary from each person to the next. Some things may come quickly for some, while others it may take a bit longer. Welcome to Puberty 2.0, results and mileage vary but it's still not a race -- so don't rush, enjoy the scenery along the way.
Other than that...smile often, take care, be happily free, and stay healthy.