....until you are absolutely sure that's what you want and you have thought about it and planned for it. By yourself is fine but difficult. If you're doing it with someone else, make sure he is on the same page and willing and ready and free and delighted to be a father. Contraception is incredibly reliable these days-USE it! Accidents happen occasionally, but that's what the MAP is for. If your life is very complicated or your relationship is new or fragile or volatile a baby will NOT help-I promise. It will make things worse, not better.
And breathe.....