The most common symptoms of mumps include fever, headache, muscle aches, tiredness, and loss of appetite followed by onset of parotitis (swollen and tender salivary glands under the ears -- on one or both sides).
Mumps can lead to hearing loss and aseptic meningitis (an infection of the covering of the brain and spinal cord) in about 10% of cases. Painful, swollen testicles occur in 20% to 30% of males who have reached puberty (orchitis) -- but rarely does this lead to fertility problems. About 30% of women who have reached puberty can have painful swollen breasts (mastitis) from mumps and, in a very few cases, inflammation of the ovaries.
Exercise should be encouraged for both women and men who are gearing up to try to conceive. However, excessive, strenuous exercise in women may result in disruption of the ovulation cycle, thereby affecting her periods. Normal exercise has not been linked to miscarriages (loss of pregnancy), but certain forms of exercise (for example, high-impact or contact sports or scuba diving) should be avoided in pregnancy. In men, too much exercise may cause a low sperm count.