Pain in vagina. Remedies. / suggestions.

Hello doctor I am married since a year..I have a regular periods. I am recently started getting a pain in my vagina. Whenever I start to urinate il be normal suddenly at the end of urination I face sudden pain in vagina and after that no clue of a pain. The pain lasted for a day and it disappeared. After two day again I'm facing same. When ever I have a stressful days the pain appears other wise it's gone. I really don't understand why it's happening please suggest me some home remedies which I want to cure it. If I drink enough plenty of water whole day..the pain disappeared for next two days. I never faced this issue any time before this is the first time I happen to see the problem. please suggest me some home remedies./ Suggestions. Thank you very much.