http://www.countdowntopregnancy.com/tools/intercourse_timing_calculator.php
This might be helpful.
Yes I am using the sticks they were positive for Wednesday Thursday and today
How do you know you are ovulating? Are you using ovulation predictor kits? A quick Google search ....The most effective time to have sex is during your fertile window, which can last up to six days every month. These six days are the five days leading up to, and the day of, ovulation, when your body releases an egg.... So if you truly are ovulating I'd say your chances are pretty good. Good luck.