your 13, what could you offer a child?
how would you care or support a baby at this age, your not even in or done highschool...something to love, you have your family and your 5 year old brother to love, something to care for, you have your brother and family for that too, your family loves you too.
you should get involved in something like an activity because it sounds like your bored and dont know what to do with the free time, so you think about having a child. Have you talked this over with your parents? or friends? what have they said about it...i dont think your mother and father would be too pleased with their 13 year old daughter having a child...they would be the main caregiver really to that child, providing a house, baby necesities, care for you, food, and more.
I think you should think this over, you have a lot more to live for than having a child at your age.
Get involved in some kind activity like i said earlier, so your mind is actively thinking of something other than a baby.
When your older, and a little more mature, then think about having a baby, at least finish highschool or college[if college is what you want to do]
But i really think you should wait.
At 13 theres alot more going for you than having a child.