Did you had sex at the time of bleeding?
Are your periods regular?
Well, chances of getting pregnancy are maximum on the 14th day of cycle, because at that time ovulation occurs. As you had sex on bleeding days, so chances of pregnancy are less. Also ideally , there is no day in women cyce , when she can not be pregnant . But chances of pregnancy in your case are very less. Also pull out method is not hundred percent safe.
You have to wait till your next expected date of menses, if you miss the next period, and even aftertwo weeks, yoyu dont haave bleeding, then you should get a blood pregnancy test. It is too early to comment at this time.