during the period time from the 1st day it is good to have intercourse for me to conceive or afterwards???

Answer 1

You should wait until your period is over with and begin trying. Ovulation takes place about a week to ten days before your period. During your period, the lining of your uterus is shedding, so getting pregnant is much more difficult.

Answer 2

Ovultion occur on the mid day of cycle. if your cycle is of 18 days then ovultion occurs on day 9th of cycle.
So you must have intercourse on the mid days of your cycle.