Did I ovulate cd 18? Compared to previous BFP chart.

Lauren

Last year when I got pregnant this was my chart. As you can see In the first pic (27 March - 27 April) there is a similar spike, then fall, then it spikes again. I got pregnant that month.

The second pic is my chart from this month (25 apr - 27 May) I think I ovulated around cd18. What do you think?