hun, it's not the end of the world.
If ka (nippz) is around she will be a good one to talk to because she was 13 when she fell pregnant with her daughter. (shes 17 now)
it does mean you have to grow up and fairly fast.
but if you put your head on straight, think sensible about things, there is no reason why you can't do this.
and at the end of the day, yes, your parents are probably going to be disappointed, but do your best to be the best mother you can.
if things really don't look good you can always look at adoption or fostering.