I concur with everybody else--don't stress out about it. You're so young that it shouldn't be a worry. I think the prevailing wisdom is that if you haven't conceived in two years from trying, then maybe you should seek help. Use this time that you're trying to conceive to take a close look at your health--diet, exercise, and stress level--because it can make it harder to conceive if you're eating poorly, not exercising, and stressed out. Besides, you will have a better, more healthy pregnancy and easier birth if you are healthy going into pregnancy. I know it can be frustrating, but just try to relax, and think that there may be some good reason why it would not be the best time right now to be pregnant. Think of the negatives of pregnancy, and that you may have horrible morning sickness coinciding with your daughter's flu, if you were pregnant now. Or something like that. Things will happen when they happen, and worrying about it won't get you pregnant.