You should be fine. I'm just over 4 months clean and sober myself. You probably lost a lot of weight bangin' stuff, so if that's the case gaining some weight as you take horrormones will also help. I've been working on gaining weight myself, also going for walks when I can, eating healthy, etc. I've been on pretty much everything out there, so I know what it's like. If you're taking hormones again, you may want to go with pill form (estrace) with progesterone (prometrium) and it will help out -- not sure if you'd want to take hormones via IV 'cause that temptation would be there (I know it would be for me)... if you wanna go for injectable hormones, and can't go on pills, get your doctor to do it for you rather than at home.
Also, be kind to yourself, take a break, and welcome back. 😉