In the past couple of days, I've suddenly had an extreme distaste for a variety of foods and drinks. Particularly alcohol and caffeine for the drinks. And for food its mostly veggies and heavily spiced items. As soon as I taste it, a bitter flavor fills my mouth and I'm disgusted.

Has anyone else experienced a change like this?

Could it be a symptom of pregnancy or PMS? Or would it be unrelated to either of those?

My period is only regular every now and then, but if I were to follow that 28day cycle this month, I should have started 3-4 days ago.