TMI... Vaginal itch

Been suffering for a few days now and it's not constant. I don't believe that it is a yeast infection since I don't have the clumpy discharge and the itchiness comes and goes. I went to my monthly appt on Thursday and my doc was going to prescribe something to help but forgot and now it's the weekend. Any ideas what it could be and any suggestions on how to work with it?  I'm at 12 weeks and discharge has definitely increased and that is when the itchiness happens. A little bit of a smell but I can't say what it smells like. The earliest I can go back to the doc is Wednesday.