CM question

Milan • 28 | Greenville, SC📍| Wife | Mama x2 💕 Lorelei Capri & Layla River
So I was on the depo shot only for one round. It ended the end of Jan and I haven't had any discharge since getting the shot. I still haven't started my cycle and my fiancé and I are ttc even though we have no way of tracking yet. 
Today I realized I had creamy white discharge. What does that mean? Google is telling me tons of different things. Tia!