[Always *]

But when you took care of your brothers your parents were still there to support you guys, you wouldn't have been doing all the work then. Helping out your parents with your siblings is not the same thing as being a parent. Knowing your capable of taking care of a child doesn't necessarily mean you are ready to have your own child, ready for the disciplining of the kid, ready to teach how to behave properly, ready to teach to read and speak, ready to take on the financial responsibilities. It doesn't mean you are ready to give up your childhood to raise a child.
I can understand wanting a child, I wish i had a child of my own and i can't wait to be a mom. Most women understand it because many of us have strong maternal instincts. But you are only 14, you deserve to be a teenager, to finish high school, to go to college if that's what you want and to work. It would be very challenging for you to do that, have money and a child.
Having depression doesn't mean you can't be a good mom. I have ADHD and i have often wondered about whether I'd be a good mom. Can I be organized enough to keep another human organized? Would I just be the most spacey pregnant person ever? Could I handle the anxiety that all to often accompanies my ADHD if pregnancy and having a child made it harder to manage issues that having a poorer attention span and all that bring up (such as organization). I think it would. But I understand that ADHD and depression are not the same, but it's a similar challenge in how it might affect you during pregnancy and raising a child. What might help you is talking to a counsellor or finding another way to figure out how manage your depression better so that it will not affect your life so much and so that you are able to stop yourself from having suicidal thoughts. This way when you do get pregnant someday you will not have to be so worried about how having depression will affect you.
Meanwhile, I encourage you to try to enjoy being a teenager. Wanting a child is natural but it is important to be practical about when the best time to have a child is.