AF = Aunt Flo = your period
There is a TTC 101 thread somewhere...I will have a look and see if I can find it for you.
DPO = days past ovulation
CD = cycle day
DH/DF/DP/DD/DS = Dear husband/fiance/partner/daughter/son (or any other adjective starting with D you feel like it should be at that time!!)
ETA: Found it!! Have a look
here
Edited by minik8e