Doctor, I'm 25 years old and married. Due to slight infection the doctor specialist I consulted has prescribed to use Topcef 200 for 5 days. One in morning and one at night after food. I took Topcef 200 as doctor suggested for 5 days. I am very much regular on my periods. Every month my period due on correct date. My doubt is that, due to the intake of Topcef 200, will my period of this month get delayed. I have heard that antibiotics do delay periods. Will that happen doctor. Now my period is delayed for 6 days. It had never happened to me before. So I am confused if is it the effect of Topcef 200 or am I really pregnant. I feel pain in my breasts too. Please guide me doctors. I am waiting for detailed reply. Please help me!