It is hard to know what a "normal"cycle will look like because you have just started charting but I do know our bodies can be strange.
First of all I would say take a pregnancy test to make sure you are not pregnant, I have heard stories of people think ing they had their period but it was just a bleed. Rue that option out first, but then I would say keep charting and see what happens.
I have very irratic temps during and right after my period, but then I still have a surge when I ovulate and it is pretty easy to see it on my chart.
Also, if Ihave been drinking red wine the night before my tempis always much higher, if I am sleeping in warmer pj's to bed its gets higher or if i have a cold or something that my body is fighting it's higher too.
Sorry thats not really an answer, but keep charting and see what happens!