Hi Pintu,
This is normal for some or most of the semen to come out of the vagina after intercourse. Still a bit goes inside the cervix and ultimately the fallopian tube, to fertilize an ovum. So, you are absolutely normal person, nothing to worry.
Regards.
Next Steps
Cherish the pleasure of intercourse as your experiences are normal
Health Tips
Daily exercise (any) for 30-45 mins.