Help!! I'm so confused!

Erin • Mother to 4 boys & Wife to an amazing man! Living in Utah from Cali.
I need advice! I'm so confused...
So when you ovulate you have clear white egg white like CM... Well I took OPK and I had my peak day on the 21st. 
Well today all day I have had O type CM...  Is that a pregnancy symptom or am I Ovulating again!? 
I am so so confused... I just want to understand my body. Ugh. Help?!
(For being baby #2 you think I would know this stuff by now)