Could this be an STD?

So I’ve never had this problem in my life, but I’ve been having vagina odor. I take 2 showers a day and I’m SUPER clean. I’ve tried taking probiotics, eating yogurt and stopped drinking protein but nothing is working. It all started once I started working out at the gym everyday. There is no burning or anything else just smell and I’m so tired of it. My ex went to Florida for a little and when he came back we had unprotected sex, does this sound like an STD? I’m going to the gyno soon but I’m just at a loss. Any advice helps!