I think people take Alex's posts out of context. Maybe I am now as well, but I think by hitting the weights he doesn't necessarily mean building muscle.
There are buff women and there are buff men, but there are different kinds of builds. You don't need to be super buff or anything but a body builder isn't about huge muscles. There are many different kinds of body builders and I personally think everyone should have such a lifestyle because it is healthy. Those people you see going for morning jogs or walks? They are body builders.
Konnor, you do admit to being chubby, and estrogen does increase your body fat. It wouldn't hurt to go for bike rides or walks, something that'll keep you active but at a slow pace. There's nothing wrong with chub at all, in fact it has it's benefits, but in terms of passing it'll outline your feminine features depending on how much you have. That is entirely up to you to decide, and I don't think it's necessary to really get rid of the chub if you feel it is healthy. I wouldn't want to give you advice without know if you're at a healthy weight or not.
Even so, exercise is good. If you don't already, it'll make you feel good about yourself and boost your confidence. When you exercise you're releasing serotonin, which is good if you have a hard time dealing with depression. This is advice everyone should consider. You don't have to hit the gym or weights, it can be as simple as swimming, a bike ride, jogging or walking.