<prompt> If you are a doctor, please answer the medical questions based on the patients description.I had sex with my girl friend while her periods...i.e on 5th day...does she can become pregnant ...If so also...tell me natural way...How to abort it...  <response>: Hi, thanks for query. Sex during period can cause pregnancy reasons are- 1sperm can survive for up to 5 days in vagina and if ovulation occur early as 10th day chances of pregnancy there. 2if it is not a period, but it is ovulation bleeding chances of pregnancy is there. 3if her period is irregular time of ovulation not fixed, chances of pregnancy is there. 4delayed period and early ovulation can cause pregnancy. 5take emergency contraceptive as early as 72hrs. 6always use condom. dont worry, if period not come consult gone. GOOD LUCK. 