Am I ovulating again or could it be left over mucus plug 😳

I just had this today even though I ovulated a couple of days ago. I had my first period on the 11th. I’m 3 months pp Via c section. Could it be left over mucus plug or could I be ovulating again? I’ve been having side pain all day. I usually only have side pain when I ovulate. I thought since that happened already I couldn’t be ovulating again.