Help!

Addie

I have been tracking my OPKS since cycle day 10. I’m now cycle day 19, and believe I got my “peak” at cycle day 18, even though the test didn’t read super dark. Is this possible? I’m experiencing bad cramping, backaches, fatigue, increased appetite and ALOT of egg white discharge to the point of needing a panty liner. Pregnancy tests are negative. Last period was May 16th. TIA!