Look, it's not a medication to start with at all. The norm is a med (I will not tell you the name) to make your breasts grow naturally and suppresses male attributes (full changes are rare these days as some older transgender people regret it (I know one who is 73) and probably half a dozen others (There is not one that does not have a major personality disorder or sexual identity issue. None are happy, regardless of age). The absolute saddest one was a bit simple and had the full op and then asked when 'her' periods would start because 'she' badly wanted a baby. Don't do anything even remotely permanent before you have tried to live as a 'woman' 24 hrs a day for at least a year
In general the psychological changes I’ve felt so far on female hormones have been a huge confirmation of my gender identity. Not all of them have been indisputably positive (though none really particularly negative either); but every one of them has felt essentially right and pleasing to me in a way that makes me feel so secure that this is the right path for me. In particular, some of the ways I have been more masculine in the past have changed, and I’ve no longer had an excuse to wonder whether I’m more like a man inside.