Hi I used pre seed for 3months and got my BFP on the 3rd month of using it (babies were born in Jan this year). I didn't produce much EWCM so i think it did help with that. I warn you a little goes along way! I got pregnant the first month I started using OPKs along with pre seed. Think before then I was missing my peak as I was trusting the apps which were actually totally wrong as I had a variable cycle from 32-36days so can't say it was totally down to the pre seed but it certainly helped.