I am 15 years old and just had a baby.
You are very young to be coping with finishing your schooling and looking after your baby. It must be very hard for you, but she is obviously very special to you. If you have enough support at home, you should be able to keep your baby with you. There are nurseries available for day care, and some local education authorities have units where you can study and have your baby with you at the same place.
Your health visitor may be able to give you some information about this, or you could arrange to see your tutor at school so that they can arrange some support for you.