Negative hpt for a week now.

Destiny • Happily Married w a lil boy named Theo and we have a babygirl on the way

So I had EWCM on CD17, the 23rd of June and so I know I was fertile but I’ve been testing for a while now and every test is negative 🙄 I don’t understand. I’m late on both my apps but negative hpts. Has anyone dealt with this before?