Light greenish cervical mucus 8 weeks

I am really worried and want to know if anyone else has experienced this. So far, up until today, I've had creamy white or watery discharge but today I've noticed light green discharge when I wipe. 3 times in total today. only a small amount. Have made appointment with doc for tomorrow. Have read up on it and different things are mentioned like sti which it is definitely not, missed miscarriage or infection. Anyone had similar experience?? Feeling very worried :-( no cramps etc or bleeding and really don't want to or I'll be even more worried