2 LH surges in 1 cycle

Hi ladies , have a question.I started to to test on cycle day 5 , just to be sure that I will not miss my surge as far as I decided to use Clearblue Advanced.I have low days till cycle day 13, I got hi and next day I got my peak.Bit this morning I tried to double check and tested again and got Peak right away again.I m in cycle day 17 today.

Thank you