Your levels can play around which is why they say once you've had a positive ovulation test, stop testing! Only taking bbt and having three consecutive high temps can confirm ovulation and if you're 4DPO I'm assuming this has already happened? In which case, no, you're not ovulating. Hope that helps! 

Because my ovulation day was 4 days ago

This month I know I ovulated of CD12 as I use digital ovulation kits which I can confirm by the temp shift this morning but I won't get it confirmed or get a cover line until I have two more days of high temps. Does this make sense? 

So you can see here that my temp suddenly rose and stayed above the cover line consistently therefore confirming ovulation. The cover line differs for each person, it simply means the level after ovulation. Once three days of high temps have been recorded then ovulation has been confirmed. It's progesterone that keeps your temps up and then it drops significantly when you start your period. 

How high has ur temperature got to be mine is 35.4 yesterday and today is 34 4