Doctor issues!

I went to the doctor this week to tell him about my horrible period pains which involved throwing up, dizziness, and just overall feeling like crap and not being able to do anything, because i was scared of having endo. He asked if I have any discharge. And I answered with yes, I have ovulation discharge and other when I'm not ovulating, but he insisted that discharge wasn't normal. And that I should have nothing coming from down there. Then he went to assuming I must have an STD. After fighting with him that I was STD free, he prescribed me some antidepressants.. I'm really confused. He didn't even do any tests. Everyone has discharge (cervical mucus) right??