I'm very similar to Jessica in that I stopped taking testosterone a couple of months ago and upped estrodial (and I'm also XXY mosaic).. What she's saying is that on HRT, if you're genetically female dominant, the secondary sex characteristics as well as mood and health and all that will change drastically in very short time. Much quicker than someone switching from one "sex" to the other it seems.. But also there's the negative that now since my body is getting the correct amount of hormones it like basically shuts down whenever I go for extended periods of time without it..

Being androgynous looking is certainly a side effect of being XXY.. However, there is absolutely no way to find out if you are indeed XXY until you have blood drawn. I seriously do not suggest getting focused on self diagnosing when it can be something other than that.. Not to say it is, but the only way to find out for sure is by karyotype unless you have an obvious DSD. Even then I still suggest karyotype test.
Beg your parents to have the test done.. Because seriously, not knowing what's going on with your body is a very bad thing that can cause a lot of problems...

If you are XXY you can come back here and tell us and I will have more advice then. 🙂 Good luck!!