Cm ??

Ok this may sound a lil gross but we are all in the same situation here... so here goes! 🤷🏼‍♀️ How do you determine which is your cervical mucus or your mans sperm? This is my week to be having sex every other day I’m fertile this week. But when I check my CM I’m wondering if this is sperm or CM?? Haha crazy question but I had to ask......