Sounds like you are doing a fine job; like you said, it can take healthy couples up to a year to conceive if they have never been on any sort of birth control. Your doing all of the right things you just need to relax and make your environment as stress free as possible. Stress can play a huge role in becoming pregnant. Irregularity can also hold you back when trying to conceive because it makes it a little harder to pinpoint ovulation. Have you been charting ovulation signs? This is more accurate than simply charting the dates you think you will be fertile. How irregular are you? There are numerous factors that determine how fertile a woman is, such as her age, whether and how often she ovulates, whether her cervical fluid is wet enough to sustain sperm, whether her fallopian tubes are open, etc. But the most important of all is the release of the egg itself. If you don‚t release an egg that often, you don‚t have as many opportunities to get pregnant. Take a deep breath, make your hubby stop smoking, chart your fertility signs, and keep doing what your doing... it will happen when the time is right. Try charting with
Ovulation Calendar and Ovulation Chart - FertilityFriend.com , it's very helpful and they provide a lot of info. Good luck and remember, your 19, you have a long time to try and make a baby :)