I just wanted to give an idea of how temping can be great. My cover line or base line/preovulation is 97.6 and below, i normally get a positive surge on cd 14-15 but ovulate on cd16, temp increases two days after that, from charting your temps, you would expect that i ovulated 1-2 days ago from the temp increase.
I actually prefer to chart my temp over opk's(bcuz i trust my temps and my body lol)
Also as you can see in october, i did not use opk's, bcuz i couldnt bd bcuz DF was in georgia, and i was so upset bcuz the next worst thing besides getting a BFN is having to skip a cycle, so i kept thinkiing mayb i should go get on a plan and visit him to bd i was going crazy, so crazy i was stressed out. As you see the stress couldve delayed my ovulation, so i ouvlated 2 days later than usual which caused my cycle to also be late(to meet the 12-14 day L.Phase)
If you dont c a temp change when temping it is a great possibility that you did not ovulate.
Like i assume if my cycle comes today, i will ovulate on the 29th of this month, (saying i dont get stressed during the ovulation time lol)
Also, i didnt put those temps on there, but around 10dpo for me(each woman is different) you will start seeing a temp drop, indicating AF could possibly be on her way. It will drop until it gets back to your baseline, you can have a high temp the day of AF up until the day after AF.
Like today, my temp was 97.9 my baseline is 97.6 so i can still get AF and temp goes down 2mrw, or it can rise 2mrw or stay at 97.9 and AF just dont show(i would be happy)
aug4=cd14=97.4 aug 5=cd15 97.2=positive opk aug6=cd16=ovulation day(pains) aug 7=cd17=97.2 aug8=cd18=97.9 temp above cover line/baseline
sept 1=cd14=97.5 sept2=cd15=+opk sept3=cd16=97.4=ovulation day(pains) sept4=cd17 sept5=cd18=98.7 temp abover coverline
oct1=cd16=97.4=+opk oct2=cd17=97.4 oct3=cd18=97.3=ovulation day(pains) oct4=cd19=97.4 oct5=cd20=98.0 temp above coverline