Could be this, better go see a doctor
Viral meningitis is relatively common and far less serious than bacterial meningitis. It often remains undiagnosed because its symptoms are similar to those of the common flu. The frequency of viral meningitis increases slightly in the summer and fall months because people are more often exposed to common viral agents during those seasons. Most cases of viral meningitis are associated with enteroviruses - viruses that typically cause stomach "flu." However, many other types of viruses, such as the herpes virus, can also cause meningitis. The mumps virus was once a common cause of viral meningitis, but it is now rare due to the routine use of the measles, mumps, and rubella (MMR) vaccine.