Only two peak

Hello,

I just had a stillbirth so I want to learn my cycle again before we start trying. This month, I started my period on 7/5 but the clear blue fertility monitor had day 1 as 7/6. I started testing on day 10 and got a peak on days 12 and 13 and a high on day 14 and now I’m low again. I never got a high before my peaks and went low after one day. Is this alright? X