new to TTC

Ami
My husband and I just started trying to conceive I've been testing for a Lh surge since the day my period ended just to be on safe side. I test at noon on my lunch break everyday and then started testing at 6pm too and it's day 18 since the start of my last period and I'm on a 33 day cycle length. Is this Normal? I'm trying to not stress but I am...