TTC postpartum

Hey all! I’m about 6mo postpartum, and we are currently trying to conceive again. I stopped breastfeeding 2 months ago. I did one round of Depo which “expired” in October. Still no period, so NO clue where I’m at in my cycle. However, today, I’ve noticed an abundance of egg white discharge but negative ovulation test. Just looking for some insight! Thanks :)