Hi. Thanks for your query and for using health care magic.
There is a concept called safe period. During the 28 day menstrual cycle, the period between start of menstruation
to 11th day is relatively safe for having sex. Ovulation occurs of day 14 and therefor at day 5 of your cycle, the chances of you getting pregnant is very less
Nevertheless, you should not take chance.
You can consider taking "Morning After Pill". Its a hormonal
Medication which acts of the uterine lining and prevents pregnancy
. Its an internationally approved medication for this purpose.
It comes as i-pill or Unwanted 72. It should be taken within 72 hours of unprotected sex. You might have some giddyness and uneasyness but they are temporary and self limiting.
So do not worry.
You can even consult your doctor for this medication
Hope this answers your query.
Thanks and Regards