Are hormonal changes and intestinal spasm and pain linked???

Not directly: Intestinal spasm are controlled by a nerves and enzymes and chemicals that completely independent from the female hormone. The only thing in common is stress. Stress can cause the spasm in intestines, same time, hormone cycles in woman can affect their mood, that the only common factor.

Yes: Women with functional bowel disorders such as Irritable Bowel Disease tend to experience more symptoms premenstrually and during the menses. The hormonal changes result in increased pain sensitivity.