Temp spike at 6DPO?

Emma

I’m new to recording my Basel temp. I got this app around my ovulation date this month, and have been trying to remember to record everything. I woke up an hour earlier today and took my temp because I needed to pee (I know this is not recommended) but I thought I would for the sake of completeness of my chart (and because I thought a resting temp is better than one where I got up and then unsuccessfully tried to sleep again). To my surprise I got a spike with the app telling me I’ve ovulated? Is this because I tested earlier than I should?