Canine herpesvirus is an infectious disease that is a common cause of death in puppies less than three weeks old. Pseudorabies is an infectious disease that primarily affects swine, but can also cause a fatal disease in dogs with signs similar to rabies.
Progestin-only birth control pills, sometimes called âmini-pills,â have several effects in the body that help prevent pregnancy: 1  The mucus in the cervix thickens, making it difficult for sperm to enter the uterus and fertilize an egg. 2  They stop ovulation, but they do not do so consistently.
Side Effects of Stopping the Use of Progesterone Pills. Side effects of stopping progesterone pills are generally mild; however, in some cases the side effects can be severe or persistent. Side effects can include breast tenderness and even an increased risk for cancer. Progesterone pills are used for a number of reasons to balance a woman's progesterone levels. Often, progesterone pills are taken during menopausal hormone therapy or to balance abnormal or irregular menstrual cycles.