CW for weight talk, body stuff

So I have no idea if this is normal or not as the internet seems to say a lot of contradictory things but I have gotten larger as a results of T.

I don't necessarily mind it, other than I love fashion and I love finding cool clothes and a lot of them don't fit anymore - most specifically pants which are very hard to find ones that work for me and look the way I like at least in my experience.I have gone up 1-3 (Australian women's) pants sizes on T - depending on the store. My natural waist measurement has gone up at least 2 inches.

Firstly, is this common? I'm worried this is happening for other *unknown* reasons. If it's common, and this is kind of the way my body is going to be from now on - I'd like to make some room in my wardrobe for new things. BUT if it's because of something else and I might actually go down in size again I don't want to get rid of my beloved clothes if I might one day regret it.

TL;DRGone up a few sizes - normal on T? Should I get rid of my pants that no longer fit?