Am I out?

Kimmy
This is my first month tracking my BBT so I'm not totally sure what it all means but I got a slight rise yesterday and the day before with positive ovulation tests and then today it dipped back down to almost base line. Does that mean anything? I have read that your BBT is supposed to stay elevated until your period after ovulation and am just curious if this dip in BBT means that I am already out for the month.