Clearblue opk

I’ve just begun using this the clearblue advanced opk this cycle. Per the pamphlet I started testing 5 days ago, and have shown a blinking smiley face indicating high fertility each day. Should I continue testing? I’m worried I missed my peak this cycle. According to glow yesterday (2/18) was my highest chance for conceiving, and I have ewcm so I feel as though maybe It has passed. Also, I have only been testing in the morning as the box tells you to test with first morning urine, but have read others say they test multiple times a day. Thanks for any advice you might have for this rookie! My husband and I have just decided to officially ttc and I’m still trying to find my way 😅