Unprotected sex yestrdy which was the last day of my periods. Pregnancy worry?

Hello Doctor,


I am a female (age - 26) married for 2 months. I had unprotected sex yesterday which was the last day of my periods. I generally have my periods 28th of every month and it lasts for around 3 days.


I would like to ask you whether there is any chance of getting pregnant? I do not plan to get pregnant now and hence need your help in understanding the chances and what I can do to avoid it.


(FYI - I had unprotected sex a month back and had I-pill the next day to avoid pregnancy.)


Hope to hear from you soon.


Thanks
Priya

Unprotected sex yestrdy which was the last day of my periods. Pregnancy worry?