White discharge after sex

Hi all, me and my husband have been TTC for 6 months now. After intercourse, I have this white discharge almost every single time. It happens right after intercourse. It’s not like normal discharge I have.

I tried staying in bed for next 20-25 min after sex but it didn’t help.

Did anyone of you ever had this?

I have scheduled obgyn appointment this month, any idea what else should I talk about there?