I have to agree with Sarah. While it probably seems like forever, the truth is most women don't fall pregnant straight away, and it is normal to take up to 12 months to fall, without having one shred of fertility problems. At your age, you will be lucky if any Dr will start investigations, as you really haven't given nature enough time to take it's course. And as for telling that little white lie, you will find that to get to the point of seeing a specialist even, you would probably have to demonstrate a fairly good knowledge of your ovulation patterns, your cycles and the way your body works. If you haven't used OPKs yet or tried temping, I would give that a go. You will probably find that even if you did get all the way to see a specialist, they would go slow and, unless they found something seriously wrong, like blocked tubes, they would likely suggest timed intercourse anyway (which is what you're doing now, but without the cost!)