The discharge & pain in abdomen you have can be due to
* A sign of an early conception.... here it is many a times associated with breast tenderness/nausea/guddiness etc
*It may also be a premenstrual sign.
* The itching & watery discharge can be due to vaginal trichomonal infection. It needs treatment of both partners ...only to be started after a clinical check up after you get periods/ pregnancy
test is +ve.
* for time being Miconazole
creame can be applied.
If you are hoping for conception, you can get blood HCG
test done to confirm &start treatment earlier.Otherwise wait for a period for 8 days & UPT if you dont have it.