Hi Doc, I have a question My sister saw her period 14-17th June 2017, had sex 24th June 2017 my fiance, her cycle is usually 27 to 28 days which according to this means she was meant to see her next period 10th or 11th July 2017, prior to this day she was feeling weak, abdominal pain etc which made her go for scan & TVC thinking she was pregnant, but the result showed otherwise. Due to curiosity she went further for blood test (malaria, typhoid and pregnancy), the results showed that she was having typhoid. Now she is treating it and her period is still not seen. Now my questions; 1. Is it possible that she is pregnant but was not detected by these series of scan & blood test. 2. Since it was confirmed that she is not pregnant, why the delay in her cycle, which hasn t occurred before 3. Can typhoid cause delay in menstrual cycle? Thanks My mobile phone 0000