It could be age. I know I used to get heaps of EWCM when I was younger and now I don't. I'm 41 and noticed when temping that I was hardly ever getting true EWCM. I hadn't realised this until after I had the miscarriage in March last year.

I tried using 3 times the dosage of evening primrose oil caps for a few days before expected O and I got EWCM & fell pregnant that cycle (m/c again).

A couple of months later without the use of EPO I saw just one little globule of EWCM, DTD right there and then and O'd the next day - hey presto I was pregnant again.

For me, the problem with falling pregnant in the last couple of years seems to have stemmed from lack of EWCM, prior to that I don't know what it was but I do have a different partner.