If he was the only man you had sex with in October then he is the father. If you had sex with other men in October then one of them could be the father because your estimated time of ovulation is just an estimate and might have actually occured at a different time in October.
if you are having unprotected sex, your chances of becoming pregnant are 100%, do not count on a 'safe time" or ovulation dates.
when a person is having unprotected sex, the chances of becoming pregnant are 100%, no matter what the regulation of periods or ovulation dates are.
Unprotected - 1916 was released on: USA: 6 November 1916
An Unprotected Female - 1903 was released on: USA: June 1903
3-3-2010
You must take the "pill" as prescribed. You cannot artificially alter your ovulation dates by taking more or less of "the pill."
The Unprotected - 2010 1-1 was released on: USA: 19 October 2010
The Unprotected - 2010 1-2 was released on: USA: 26 October 2010
The Unprotected - 2010 1-3 was released on: USA: 2 November 2010
The Unprotected - 2010 1-5 was released on: USA: 16 November 2010
No. It will not affect your body's schedule as far as your period go. However, if your hymen was broken during unprotected sex, and you are pregnant because of this, then you can expect to miss your period for the next 9 months ;)
A woman who wants to get pregnant faster should have sex more frequently, find out her ovulating periods to pinpoint the most fertile dates, step up sex just before ovulation, enjoy having sex and finally give it some time.