I Ovulated yesterday but no temp rise on BBT chart? Please help!?

Hi, this is the first month i have been charting my temps, I know i ovulated yesterday as my CM stretched to about 5 inches, (sorry tmi) and i had cramps all day yesterday. Now today it's dried up and tiny milky bits. I took my temp and it's only .1 higher then yesterday, is this normal after ovulation, i thought it was meant to rise min .4 degrees. I've BD everyday apart from yesterday, so i am uming i did it the day before i ovulated. What do you think? Thanks in advance.