I completely understand where you're coming from. I was 16 when I had my first baby. Then I got married at 18, and had my second baby at age 19. I'm now 21, and my kids are just fine! Yes I will admit it's definitely a lot of work and can get tiring and stressful!! But, you just have to do your best...eat healthy, take your vitamins, drink mostly water (try no caffiene), exercise, and get lots of rest. Obviously, you shouldn't drink alchol, do any kinds of drugs or smoke. I'm not trying to give you a lecture, lol...just read lots of baby info. books, and take care of yourself. Once that baby is here, and you hold a part of you in your arms for the first time, the rest will come naturally!!

good luck!