No more discharge

19, female. I have not had any discharge for about a year I guess. I’m not on any medication, I’m not itchy, I don’t have burning, no odor. I had sex about 3 months ago, unprotected, but I haven’t discharged in about a year. I get my period usually normally, I eat fairly healthy foods, and I’m in shape for the most part. I have looked up several times what could cause this but I’m never given a straightforward answer. I don’t like doctors unless it’s an extreme emergency, which this is not. Can anyone here help me?