4 days of positive opks

Brandi
Hi I am new here. I am ttc #2, been trying for two years. This is month 2 of letrozole. Day 21 progesterone on month 1 was 25. So it seemed to work for me. 
Today marks the 4th day of very positive opks. I test multple times a day. I know you are supposed to stop and go by your first one, but I always test out my surge. Cervix is still show but cm gas turned not firtle. Has anyone else had something similar happen? Did it change anything in your cycle?