My periods cycle used to be 28days regularly. tis month it crossed 34days-am yet 2 get it. self pregnant test says "-"ve though i had protected sex.help!

Irregular periods: Late periods are a common problem that a gyn doc can help you with. There are many factors that can delay a menstrual cycle, including travel, stress, weight changes, and medications. If not preg, ; you don't get a cycle for three months in a row, the doctor will likely prescribe medication to bring it on. The doctor also may test for other problems, like hypothyroidism, that could affect cycles.