First thing is first, Relax you can stall yourself out if you are trying too hard. Also Get a thermometer, and take your basil temp. (@ the same time every morning before you get out of bed) Chart it. There is information on this online. I personally love the ovulation kits; however, in your case it would be very expensive. These kits are designed for you to know how long your cycle is and the use the pee indicators during the 7 days they recommend.
I recommend the temp. thing for now just to tell you when you have ovulated. This is not a predictor but a pattern indicator. This will tell you when you have ovulated, if you make woopy right away you still have a chance; however, right now just knowing when you ovulate could help to know how many days after your period you need to "dance". Once you have seen a pattern you now know when to test, so get thos ovulation kits.
Have Fun & Good luck.