Perhaps you should talk to an endocronologist. A year on hormones is really not a long time in the scheme of things. Consider how long it takes women to go through puberty in their teens, one year is not long, you should be seeing changes for a few years yet.
Spiro is an androgen blocker i.e. blocks your testosterone. Your sperm is fairly unlikely to come back at this stage. Also you are likely to be sterile from a year on hormones. Eitherway the Spiro is the thing affecting your sperm production facilities.
You won't change into a male. If you have breasts already you probably won't loose what you have. You will still get effects such as reduction of body hair and muscle mass.
Taking Spiro on it's own in the long term can cause osteoperosis - you need some hormones for good health. Talking to a doctor/endo/gender therapist would be a good thing. You're going to need to do it anyway to get approval for surgery.