Your chart is not like any I have seen before! Not that there is anything wrong with it, just difficult to interpret given the limited information we have.
Keep on temping, try to be as consistent as possible with the times your do so and try to be mindful of your sleep habits, to try and ensure you are temping on a good solid 4 hours of sleep the same every day. Your chart doesn't really look to me like you're not temping consistently because it isn't jumping up and down...but you never know.
As Patti mentioned, I would also suggest maybe buying some OPKs. I get mine for pretty cheap off early pregnancy tests dot com, some of the other ladies have found good deals on ebay. And also checking your CM will help as Patti said.
Sorry I'm not more help with interpreting your chart! I keep looking at it every few days and thinking "now what?". I just haven't seen one like that!
Hope it becomes clearer soon