Sincerely, confused.

Asking for some feedback: currently on CD 22. This is our 3rd cycle TTC. Prior to this, I had a 30 day cycle. Since starting to try, my cycles have increased to 35-38 days. I have done OPKs since CD 10, every day, 2-3 times a day. I have still yet to see a positive result. Today, I had EWCM.. first time this cycle, but still negative opk. Is it possible my LH urge is just too low to be picked up? Is this common?

Sincerely,

Confused