Is a yellow CM normal?

I had my period 13 days ago and it ended a week ago. I had sex on Saturday (3-4 days after period ended) and the day after I had a yellowish/greenish discharge. I thought it was maybe because I just had my period and I had rough sex but then I shaved and I tend to get infections if I do so. He used condoms so I don't think it's an infection. I had the discharge in the morning and it was just a bit but I'm not sure what it can be. Any thoughts?