Welcome. As PP have said, try charting. Temping, checking CM, and OPK's (which I will be adding next cycle, after this cycle's craziness), will give you the best insight into what is going on with your body. I suggest using them all right away. I didn't and know I regret it because my chart is a mess right now.
Fertility Friend is a great site, with a charting course to help you with interpreting, and inputting data.
Also, read the newbie link, there is a ton of helpful info in there as well.