Some women are like an open. The symptom they are having is very easy to read. You can tell a women if her mensus is around the corner by observing a few things. Some women hardly had acnes but would pop a few adult acne out before her mensus is due. While others might have bloated stomach or food cravings. The new one I heard is farting.
This happened during one of my yoga session when the student would fart (don’t worry, no smell at all) occasionally throughout the 1 hour session. Interesting huh. What symptom do you have before your mensus is due?