What Are The Side Effects Of Fertab Tablets?

I am 25yrs married women, now i m planning for a baby after 11/2 yrs of my married life. After consulting a doctor she had adviced to have fertab 50mg for 5 days from 4th day of my periods. I have 29 days normal cycle. I just wanna know the side effects of this tablet, is it required to have the tablet even if i have normal periods.