my period was on March 1st or 2nd and i had sex with my bf on march 10th and with an ex bf March 14th and again with my bf on march 21st who is more likely the father??? HELP
It could be either.
Normally you would ovulate between days 11 and 16 of your cycle. You had sex on day 8 or 9 with your boyfriend, and day 12 or 13 with your ex.
Sperm can survive for about 5 days. Either is just as likely depending upon when EXACTLY you ovulate.
By the 21st, it is unlikely the egg would be viable. They die about 48 hours after ovulation.
You'll need a DNA test.