thanks for using health care magic.
An unprotected intercourse
the day after your period will not
lead to pregnancy
unless the bleeding you had was not your
menses. Periods come because the uterine inner lining gets
slough off thus making it unfavorable to accommodate a preg-
nancy. Thus its less likely you could be pregnant after that.
On the other hand, it is more likely to have picked up an infec
tion following the intercourse. This is so because blood is a rich
culture medium and any germ that enters shortly after your
periods is more likely to survive and cause an infection.
However getting a pregnancy test and a vaginal swap test
would be the ideal things to do.
Hope this helps you.