HELPPPP!!!

So Friday night the 14th I took a plan b after unprotected sex (he pulled out) but I’ve been tracking to see when Im supposed to ovulate and I’m not supposed to until the 20th. They’ve all been negative until today. I’m not sure if it’s positive or if I should retake one. All the ovulation tests since the 15th have been negative, until today the 18th. I also haven’t had any egg white discharge throughout this cycle, It’s all been sticky