I'm pre too but...
I remember some people saying they went through a "bloated face" stage because of water retention, but this is very temporay, maybe a month to a few months.
Also, there may be a higher risk of reproductive cancers such as cervical cancer, I forget why (probably somehting to do with the various hormones interacting within your body), which is hwy it is often recommended to have those organs removed... but it's not something you need to do right away if you decide to do it. It won't happen within a few years of taking T ... probably more like a decade or more.
As Da Monkey said, acne is often one of the biggest issues. I'm personally really worried about this because I'm already prone to bad acne. But just drink lots of water, use a good facial cleanser or if it does get bad, talk to a dermatologist to find a medication that will work for you.
As for mood and things like that, I don't really know. There are jokes about "'roid rages" but (steroid rages) but I'm pretty sure that's a big myth. You're not going to turn into a raging macho man.
