Answer by
jtslittlepod (24)
There are many different causes for rectum and lower abdomen pressure. Pregnancy, Gas, Cancer, Appendicitis, Menstrual cramps, Diverticulitis, UTI, Kidney stone, IBS, Crohn's disease, Gastroenteritis, and many more are all possibilites. The best way to find out what is actually happening is to see a doctor and have tests run.