Weird smells

So, I normaly dont have a very potent vaginal odor but recently, since my husband and I have started trying for a baby, I catch wiffs of myself every now and then and it's definatly acidic and strong. Is this due to maybe becoming pregnant or would it be from all the baby making we are trying to accomplish? I am very clean btw, I change my undies morning and night and shower every day. I have never smelled myself this way before. Am I just way too excited hoping that I am pregnant, does your ph balance change once the sperm attaches to the egg? Or am I just wishfully thinking and it's actualy just from all the sex?