BBT Charts Leading to Twin Pregnancy

Patricia
Hello ladies. I use Clearblue advance(digital) OPKs. My cycles usually last 26-28 days. Last cycle I went straight from low to peak on CD10, so this month I decided to start testing the day after AF. I got my peak on CD 8, which I felt was super early considering the "average" peak day should be around CD14. This morning, CD 14, when I charted my BBT I thought it looked similar to when I ovulate, so out of curiosity I tested again (I stopped testing after my first peak, as it says to on the box), and I got a high fertility. So my request is, those who had/have twin pregnancies, please show me your BBT charts leading up to your BFP. I'm wondering if I in fact am ovulating twice this month. Here's my chart.