Hi Nisha, Let me explain the process. You have periods for 4-7 days, during which time the eggs which are to come out of ovaries are getting ready. As they get ready , the inner lining of uterus keeps increasing ,so that it s thick enough for the baby to fix or implant on time. In a 28 days cycle, the eggs ,(inside the follicle) is growing in size & around day 12 of periods follicle ruptures letting out the egg. Egg moves into the Fallopian tube, a bridge between the uterus & ovaries, where it waits for the sperm for 24 hrs( that s the lifetime of egg - 24 hrs!), if you have sex around that time or just before that, Sperm will be waiting in the tube ( lifetime of sperm is 3 days/ 72 hrs !) If they meet they form baby, which swims into uterus to get fixed there. Doctor gave those pills to increase the health of eggs & also to increase the number of eggs recruited. You can have sex whenever you want, any number of times , no problem. Best timings are- Daily or alternate days once bleeding of periods stops, so that old/ elderly sperms are thrown out, till day 10 of periods . Day 1 of periods is 1st day of periods. Then no sex for 3 days, so that fresh & young sperms accumulate Then again daily atleast once from Day13-17 of periods, which is time of ovulation. Hope I have clarified your query All the best Dr.Balakrishnan