Im having a lot of yellow discharge with no smell and some itching at night do I have an std or is it an yeast infection.. the last time I had unpertected sex was about a week and a half ago.

Sounds like a yeast infection. If it smells, it's definitely a yeast infection.

I think you should go to a doctor. A ddischarge is suppose to be clear. But I remember reading a book and it said that if a discharge is yellow and smells then mostly likely it's a STD I 4 got the name of the STD.

And remember unprotected sex there can always be STD issues, and even pregnancy issues.

You need to see your doctor, and since this was posted in teen health perhaps talking to your mother