Wanting a child!! 👶

I am a 16 and I am in a relationship and ever since around the age of 13 I have been wanting a kid of my own. I know it sounds crazy but I do work a full time job and go to school. I just know that it's not a good choice but I can help but think I need to. I mean nobody is promised tomorrow  and I just feel if I don't have a kid now I will never get a chance. Me and my mom fight about it a lot!! Mainly because my 17 year old sister is pregnant (on accident) it just makes me sad cause I feel like she won't give the baby all her attention just for the fact that she doesn't want a kid. I'm sorry that this is just me rambling on. Just needed to get it off my chest...😞😞