I know exactly what you mean. It feels really good to have that glimmer of hope, but knowing the potential for disappointment gets harder to face the more excited you gets makes you want to keep your feet on the ground.
I had my IUD removed in August of 2012 and did keep track of my 'DATES' since then, as well as trying (not too seriously) to time BD when I expected O, but my cycles are all over the place so it wasn't very effective.
Last cycles I started temping, but wasn't too consistent with it. I also started paying attention to CM. This cycle I have taken my temping seriously, doing it pretty much at the same time every day and noting CM and I'm glad I did. I have REALLY long cycles sometimes (like 30+ and even 40+ days sometimes) and short or more 'normal' ones sometimes too. I didnt expect to O until CD 20 or so, but according to my temps (and CM seems to coincide) I O'd on cycle day 12 this time. At first Fertility Friend put me at CD 11, but moved it to 12 when I put this mornings temp in. We only got to BD on CD 12, so I'm kind of glad it moved, that is also the day I noticed some really good Eggwhite Mucus, so I'm hoping we caught us a sticky bean.
My temps have spiked and stayed up since then, but today is only CD 15 so we'll see what happens.
I noticed some pinkish cm on CD 13 (which i attributed to O spotting or maybe just from BD'ing) but then yesterday (CD 14) when I went to check I noticed bright red fresh-looking blood. Not just a spot, but kind of a gush (sorry if that TMI for you). It really freaked me out. Today it's gone pink and is just spotting again...so I don't know wth is going on.
I will certainly keep you updated for sure!! I am excited but trying not to get too excited ya know? We have "seriously" been trying since March. That's when I started taking my temp and doing ovulation tests. So lets hope these are good signs!