So, for context, I am an adult currently living with my mom. With what I'm currently making, I can comfortably move out by spring, and might look into doing so earlier.
Now, she *is* aware I'm trans. Has been for many months now, and was aware before I moved in. However, when I came out to her, even tho she asked for my pronouns (she/they), she simply never used them. After living with her for about a month, I called a family meeting to reiterate my pronouns, as well as share my name. Since then, she's been using my new name and they/them, with minimal slip-ups, which she corrects herself on.
Now, during that family meeting, I explained my plan for my transition and how I wanted to start HRT. The stupid in me tried to explain past just a simple, "It'll be a second puberty," and mentioned that it *might* be possible for me to experience periods (don't ask me why I brought this up to her - while I *do* want them, I panicked in the moment and started talking about other effects of HRT). She did *not* take that well. One of my siblings (not trans, but has many friends in the LGBTQ+ community, including trans friends), explained that most symptoms are caused by hormones, rather than b/c of the bleeding.
Anyway, b/c of her reaction to that, I'm a little nervous about telling her I started HRT a little over a month ago. The reason I'm thinking about it now is that I have started feeling my boobs beginning to grow. While it can be partly ignored since I have muscle there, I know it's not something I can hide forever. Also, I don't *want* to hide it forever. My egg cracked less than a year ago, and my goal was to be out to pretty much everyone in my family that I cared to tell - which I have done at this point.
I understand I am lucky with how accepting the family I have told is, and how supportive some of them are. While my mom had probably the worst reaction from everyone (not heinously bad, but one of her three questions was if I like boys or girls - this being before I knew my actual sexuality), it didn't prevent me from moving in with her. I truly don't believe she would kick me out over not telling her sooner (even tho I made a point to not wait with coming out to her b/c I thought she would complain if she learned she wasn't one of the first), I can't help but to be nervous over this.
So I guess my question is: should I tell my mom I started HRT, wait until it becomes obvious, or hope it doesn't become obvious until after I move out? Any advice yall can give is appreciated.