Weird discharge

I know I should book in to see my doctor but until they have a spot available I was wondering if anybody could help out.

Earlier I noticed a green chunky vaginal discharge which looked almost like flem mixed with toilet paper and after inspecting it I noticed it was actual discharge and now I’m worried.

I haven’t had any signs that somethings wrong down there I haven’t no signs of uti and I’m sti clean so this has genuinely got me puzzled because I’ve never had anything like it does anybody know what could have caused it? Thanks in advance x