Most women go through some level of menstrual pain when they enter PMS and their period. The muscles naturally contract, which can create pain and stiffness as a side effect. However, for some women, it's downright debilitating. If you're suffering every month, you're doing so needlessly. Many women think that they're just not tough enough, but the reality is that every woman's menstrual pain is different, and some have it worse than others.