What Causes Clear To Yellow Discharge After Periods?

Hi, may I answer your health queries right now ? Hi my period ended three days ago (it usually lasts 3-4 days, this time it lasted 8) and my vaginal discharges is now a clear or pale yellow color with no odor. When I went to the restroom today, the discharge was pale yellow with a streak of red in it with no odor. It was very stringy. I had intercourse yesterday with my husband, could the streak be a result of that activity?