Anyone get a BFP without EWCM?

Mila • Expecting our daughter and first child on 27th May 2017.
This month I took EPO up until O day and usually I see quite a bit of EWCM around my O day. this month not so much and probably because I had a heavy day drinking the day before O. Just curious as to whether others have not had this and still conceived as I know it's a big sign of fertility and O! Thanks.