Thanks for the query.
Some amount of menstrual irregularity can be seen with contraceptive
And this will subside soon as told by your doctor. Nausea
sensation of abdomen, breast tenderness etc side effects can also be seen with the pills. Neck pain
is nonspecific symptom and may or may not be related to pill.
You can go for symptomatic treatment for few days.
Possibly this will help in decreasing the symptoms.
You can continue the pills as usual.
If the problems persist for longer period, think of changing the pill.