Egg white mucus during period

PD

Today is cd 2 for me and I’m just like whatever’s been trying for a while all my temps looked amazing this month better then they ever have it was promising and then day 30 period starts. So today is day 2 of period and I wear a diva cup for periods. Well I took it out his morning and had a ridiculous amount of raw egg white mucus. Has anyone ever had that it was mixed in with my period? Could I be fertile in my period cycle? Any thoughts?