Also migraine has various triggers. Try to identify the trigger and avoid it. For me triggers are lack of sleep or even power nap, delaying meals and exposure to strong sunlight especially noon time . So once u identify the cause, u will be able to manage it better. Nonetheless speak to ur doctor.

Thankyou VeryMuch Mam.... I shall follow your suggestion....

Take rest and don't strain your eyes too much

It appears that you have a migraine headache and what you need is rest and sleep. You can also get a head massage and keep a hot water compress on your head. It is best to discuss any medications with your doctor during pregnancy. If this persists or repeats then it could be blood pressure related or an iron deficiency and again this should be checked by your doctor.