Hello.
A white discharge per vaginum suggests a possible infection of the genital tract. Do you have any fever
running? Please consult a gynecologist for further probe into the cause of the discharge. Candida is a common
infective agent. You can use some antifungal suppository at night for a week. The infection should go away.
The abdominal cramps are probably related to the infection. Yu have to make sure the infection has not spread
to the abdominal cavity.
The neck soreness may be unrelated, but generally when you have infections, the body malaise can lead to such
symptoms which appear unrelated.
Regards