Itching just before your period?

Does anyone else like get really itching almost like a yeast infection just before your period starts? And then once it starts it goes away completely until just before your next period?

Does it have anything to do with your PH balance? This just started for me. However, I’ve been tested for STD’s and all negative. I’m not sexually active as of 5 months ago because me and my husband are now separated. I’ve always used dove soap the original, no artificial scents or anything. Same laundry detergent and all. I just have no idea what the hell is going on or if this is even normal??