pregnancy ke liye masik ke 10 din pehle or masik k 10 din baad matlab centre me agar sex kare to pregnancy rehti ha..but agar masik k thode din baad or or thode hi din pehle agar sex kare or virya andar jata hain in short centre k dino l alawa sex kare or virya anadar jata h to pregnancy reh sakti h ya nahi rehti h ..plz reply