You can use Fertility Friend to record your temps. Basically you take your temp every morning at the same time. Before you get out of bed. You can then record your temp in fertility friend and it can help determine the day the O'd and testing dates etc. Taking your temp once wont tell you anything. I would suggest temping your next cycle if this cycle is a bust. Buy yourself a cheap BBT monitor.

You can register here for free at fertility friend, this is the best way to get to know your body

Ovulation Calendar and Ovulation Chart - FertilityFriend.com