Hi,
Welcome to ehealthforum,
The symptoms that you describe suggest chances of infection and you should consider visiting your doctor/gynecologist at the earliest for examination and further evaluation to look for the causative agent (it is difficult to comment on the cause without examining you). Once the causative agent is detected, you will be started on appropriate treatment to help with control the symptoms and cure the infection. Drink plenty of water. For the itching, and soothening the symptoms temporarily, you can apply Caladryl lotion or Aloe vera lotion (it will be for temporary relief, not cure). Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately.
Take care.