Thanks for writing in to Healthcare Magic!
She had periods on last month 28th , You had unprotected intercourse
on last sunday i.e. 28th Oct
So you had sex in Non fertile period of her Menstrual cycle. So there was no need of Taking Ipill
and stomach ache could be due to several other reasons and probably she will start her periods within next couple of days , so i would suggest you to wait for few more days .
For cold and Fever symptoms i would suggest you to take normal Paracetamol
tablet and wait for couple of more days.
If you have any further query please let me know I would try to answer it for you.
Wish you a great health!