Based on your history, I don’t see a reason why you would require fertility drugs at this time. Unless there is a definitive reason to suspect anovulation or infertility, we recommend most patients your age to try to conceive naturally for 1 year before beginning an infertility workup.
It might be beneficial for you to receive a medical work up and counseling from your gynecologist or a fertility expert. This way, you may be informed on how recognize ovulation, how to time sexual intercourse with ovulation, and what you can do to maximize your fertility. For your information, the first step in evaluating infertility is a semen analysis because nearly 50% of infertile couples are due to male infertility.
With regards to your question, vitamins are beneficial to a healthy pregnancy; they supplement fertility treatments but do not replace them and there is no evidence of vitamins alone increasing your chance of pregnancy. All women aiming to becoming pregnant should be on prenatal vitamins to prevent birth defects. In addition, you should aim to make lifestyle changes such as eating a balanced diet, eliminating alcohol/caffeine/cigarettes, and maintaining a healthy sleep cycle.
With regards to herbal supplements, some people suggest that Chaste Tree Extract (Vitex agnus-castus) can help increase a woman’s chance to becoming pregnant. In fact, there is only scientific evidence that the extract is effective in decreasing PMS symptoms and breast pain. There is extremely limited and inconclusive data that Vitex extract increases a woman’s chance of pregnancy. In fact, Vitex extract use is contraindicated during pregnancy. We do not recommend anyone who is trying to conceive to use Vitex extract.
As stated above, vitamins and herbal supplements are no substitutions for infertility treatments. Lifestyle changes and prenatal vitamins are the most important changes any woman looking to conceive can make.