Fertomid contains clomiphene
citrate, it is used for ovulation induction
according to literature up to 6 continuous cycles it can be used if needed.
the side effects are,
head ache, nausea, blurring of vision, abnormal uterine bleeding
serious adverse effect is hyper stimulation syndrome.
if you are having very much discomfort better visit your doctor once and get ultrasound
one or two days alteration in periods is normal no need to worry about it.