Mam/Sir, My friend period cycle is irregular in fact she was always late from her last period date from 2,3,5or sometimes 7days also. Whenever she regularly done yoga for a month she had on exact date period come. Last mont she had 4or 5days late period from expecting date and after 8days late she had sex with bf so plz tell me that is any chance of pregnancy or not. She doesn't take any pills or precautions. Today is the expecting date of period and she doesn't have, is this normal or as usual 5-7days late from date or anything else?