Hi... my husband and I have been trying for awhile now, and I have super-irregular periods! I usually won't have a period unless I am on some sort of meds be it birth control or hormones (you can get a precsription from your doctor to regulate you better) anyway... because my periods were so irregular I wasn't ever sure when I was due, or if I had missed a period because I might be pregnant or its just my dysfuctional body! Haha so I do a combo of ovulation tests and temps (if you want to get pregnant its worth all the charting in the world).
I buy a lot of ovulation tests because depending on the length of your cycle you ovulate at different times... since I didn't know when I would be ovulating I tested a lot... I buy all my testing supplies at
Early Pregnancy Tests and Ovulation Predictor Kits for Home Use I swear by them... its SUPER cheap and they have combo packs that include ovulation test and pregnancy tests... and you get more tests than what you get in the stores!
So... I started testing about 10 days after my period and just tested everyday until I got a positive result... once you get a positive result you should ovulate in the next 36 hours.
Now there is always the chance that you will get a positive result and not ovulate (sometime your body just didn't get hormones to the precise levels and you won't ovulate) Ovulation tests just detect the LH hormone surge... they can't tell you if you did in fact ovulate... that why I also take my temps.
You can get a charting calendar at
Epigee Pregnancy Resource where you can chart you temps... read up on BBT (basal body temp) in short, your waking temp will spike from the norm (about .3-.6 degrees) AFTER you ovulate due to the body producing the heat-emitting hormone progesterone that is present when you release an egg. But again, your temp will only rise AFTER you ovulate... which, if used alone, is usually too late because your egg starts desinergrating after about 12 hours... but if you are doing the calendar you will know that the previous 6 days before your temp spike are your most fertile days... so that's why I do both... the ovulation tests to detect the surge... then the temps to be sure I did in fact ovulate.
The best book to get is "Taking charge of your Fertility"... it shows you how to detect when your are most fertile, your peak fertility days... etc... its a great book!!
Hope this helps some!!
Good luck!