Hello dear,
I understand your concern.
As per your information there was not regular intake of birth control pills.
So the protection from them is not assured.
The period days and a week later the period might be considered as safe period where in there are no chances of
pregnancy due to
unprotected intercourse.
But the period after one week of the period might not come under safe period.
So as you had unprotected intercourse during that days there might be risk of pregnancy.
As the first sign of pregnancy is missed period I suggest you to wait and check for the period.
If at all the period is delayed consider doing a urine pregnancy test a week after missed period for accurate results.
All other symptoms of pregnancy like
nausea,vomitings, increased urination ,sore breasts start 2 weeks after missed period in case of pregnancy.
So kindly wait and check for the period.
If you get the period the presence of pregnancy is ruled out.
Hope this helps.
Best regards....Dr.Srilatha