21 DPO

So I am currently 23 dpo and af is 9 days late. I have lower back pain and terrible headaches and the world's worst case of insomnia. I have been having egg white discharge as if I'm about to ovulate for around 3 days now. So I tested and had 2 negative hpt's (cheap ones) and 1 negative clear blue digital test. BUT the craziest thing is that today for whatever reason I took an OPK and it was positive. Is it possible to be pregnant and showing on an OPK before an hpt? Or am I somehow ovulating twice? Has anyone else ever experienced this? I'm so confused and honestly after 2 years ttc I just don't want anymore false hope.