What is this?

So I was at my obgyn appointment today and of course this shows up RIGHT after the appointment like an hour later so couldn’t even ask about it 🤦🏻‍♀️ no infections of any type and no smell to it

It’s creamy white discharge,Been showing all day (it’s dried up now in some spots on my panties-I was out all day)

I’m also experiencing back pain and slight cramps not sure if it has anything to do with it.Havent had a period since July I have PCOS