Hello sir and welcome. First of all, contraceptive pills will provide some level of hormonal support but not enough to go about the complete process. As you are willing to go about a sex-change then you should not be worried about the changes that it brings (of course). In that case, I would recommend a visit to a doctor you trust or find a sex specialist. One who can help you with the transformation, as it takes more than just a few pills. We will have to start with a few stronger hormonal pills and at the same time monitor their levels in order not to let them reach a dangerously high level. Following this, you will have an option to choose to go ahead with surgery or not. Please do not self-prescribe and make sure a doctor does all the prescribing for you. Hormones are a certain level for a reason, and tampering with them without any medical knowledge will only do you harm. Hope this helps. Best wishes.