Does ewcm happen before ovulation or during?

I know this is a silly question and I believe it is before but I'm not sure... I am usually a regular opk user but I am just getting over an ectopic pregnancy and recently got the go-ahead to try again. Not even sure where I am in my cycle because I haven't even had a regular period yet. I have been taking opk's here and there this week but not regularly and have not gotten a positive but I think I might have missed it yesterday. It is weird though because today my cervix is in the SHOW position and I have a lot of ewcm! We are not really actively trying yet because we wanted to wait until I had a regular period so that we could date the pregnancy but we did BD on Tuesday because I had cramps last week and thought that I already ovulated!