The best thing is to temp all cycle - the temps after ovulation are more important than the ones before!! If you stopped after ovulation was confirmed, just temp for the rest of the cycle. It may be a little more difficult to read with temps missing, but if you temperature is dropping you know what is coming.
To go through the different charts, if you are not pregnant your temp will increase by at least 0.2C after ovulation. The temperature will fluctuate but stay high and above the coverline (the lines that come up on the chart if you use charting - fertility friend is good or if only countdowntopregnancy.com is good too - I use both). When AF is due your temperature will drop back below the coverline (the horizontal line).
How soon your temperature will drop depends. Usually it will drop the day of or day before AF will arrive. Some women have their temperatures drop gradually over the day or two before and some have a sudden drop. On my last cycle the day AF came my temperature dropped by about 0.5C which was well below the coverline so I knew the witch was coming. Occasionally some women find their temps don't drop until the day after AF, but generally it is the day of or the day before if slow dropping.
If you are pregnant there are a couple of things that you could see. The main thing is that your temp will not drop and will stay high. Whereas if you are not pregnant it will go down when AF is due, if you temp stays up beyond that then you are likely to be pregnant.
You can sometimes get an 'implantation dip' on your chart as an early symbol. However, having a dip does not mean you are pregnant (normal fluctuations mean that non-pregnant women can get what look like implantation dips although it is not that common) but not having a dip doesn't mean you are not pregnant as not all pregnant women will see them.
The dip will happen between usually 5 and 10DPO and can dip down to around or below the coverline. The temperature will then go up again the following day and will stay high if you are pregnant.
Some pregnant women can also get what are called triphasic charts, which is where there is not necessarily an implantation dip but after implantation the temperature jumps up again (like after ovulation) and then stays at the new higher level.
The main thing is that not everyone will get an implantation dip when pregnant, but your temperature will stay high past AF due date if you are. If you do get a dip then it is likely you are implanting but it is not a definite.
Hope that makes sense, but it does get a bit complicated.
If you have any other queries on temping just let me know. I am by no means an expert and have only been temping for a couple of months, but have read a lot of information on it to figure out what I was doing and what it was supposed to show x
