Conversation: The conversation between human and AI assistant.
[|Human|] my last menstral period was on 1/13/11 it lasted 3 days. i slept with a guy on 1/18/11. i took a ept test on 1/25/11 and it was negative on 2/5/11 i took another test it was positive. my question is what are the chances the man i slept with on the 18th is the father
[|AI|]  Hi, Thanks for the query. I understand your concern. No chances for the person referred in query to be the father because-The sex was on 18th of Jan. ... which was 6th day of densest happens to be in safe zone.(ovulation the least possible in periods unless menstrual cycle is 20-22 days.) Pregnancy test gives reliable results after 8 days delay in menses. Both the tests were done earlier CSO not reliable. The + ve test on 5-2- 11 must be false +ve due to contaminated urine or container.  Thanks.