I know that it is possible to not have visible ewcm and still get pregnant. Some people don't get any. I know I get very little that's why I started drinking grapefruit juice and it really worked. I had lots of it. Unfortunately it seems to come before I O. still have to work out a proper schedule for it. Also try baking soda for a more alkaline PH. There's different ways to use it. (Douche, drink, finger) Douching isn't always advisable but I say do which ever you are comfortable with.
Got crosshairs today too. Not sure if I'm trusting it though. FF is the chart that has all adjusted temps from sat to ystrdy. We shall see. Went for 2 days without bd and finally started bding again Mon morn, the day I supposedly Ovulated so I hope we caught it in time. I'm just like you being worried about not providing the right environment for the sperm. Not betting on the previous days before being enough.
So the tww begins....BFPs to us both!!!