HELP! 33 weeks pregnant discharge

So, I have no STDs at all- I’ve been tested 3 times in my pregnancy and they all came back negative. I have been tested for BV and that came back negative. I am still getting this super weird discharge (with no smell, but itching sometimes) and it’s driving me crazy! Could it be a yeast infection? I’m 33 almost 34 weeks pregnant and this has been happening for well over a month. My OB says it could be hormones.