Hi,
I understood your query.
- usually ovulation occurs on 14th day of menses ( in 28 days cycle).& Ovum remains viable for 36 hours from ovulation time.Accordingly, your ovulation day would be 21st of November.
- similarly sperms are viable for 72 hours( 3 days) from ejaculation time.
In this light,
* sex on 7th November ,you had protected sex ,with broken condom. Any way, there is no possibility of conception on that day, as
menstruation started the same day, naturally no chance of ovulation.
* sex on 19th November was unprotected,pull out method ( with lesser chance of entry of sperms in vagina.)It was 12th day of your menses, ovulation yet to take place & sleek possibility of sperms entry in vagina which have to weight for ovum for 2 days.
The possibility of conception is very low here.
* Unprotected sex on 22-23 of November being 15th & 16th day of period, have maximum chance of conception.
** of course confirmed paternity can be decided by chromosomal analysis
only.
Thanks.