It's always a good idea to consult with your doctor before trying to conceive to make sure you're healthy and in good condition to carry a baby to term. You should also start prenatal vitamins, etc. Ask your doctor about these things.
Also, this page has information to help you understand when you're ovulating:
http://www.tcoyf.com/
thank you I have had two babies already full and healthy....me and my partner is ready for another....and I am so confussed with all the answeres its been about 21 days since my last and now im on again...in the same month so it just makes me wonder.....about when I should start trying again...i mean we have sex al the time multiple times...
i have a short cycle of 21-22 days regulary...and always 6-7 days it lasts....can I be ovelating while on my monthly?
You could get ovulation test strips to know for sure when you're ovulating:
http://www.meditests.com/dbeslhovdipu.html
The "Taking Charge of Your Fertility" book may be easier to understand than the website. I got the book from the library, and downloaded their temperature tracking charts and got a cheap, drugstore thermometer so I could know when I was ovulating. It seems confusing at first, but I quickly got the hang of it. After some practice, it was super easy and not that inconvenient.
Best wishes.