hi if you had a one day period it could have been implantation bleeding. what does implantation bleeding look like? implantation bleeding is vaginal discharge which usually contains a small amount of pinkish or brownish blood. only about a third of pregnant women experience implantation bleeding. now if this is what you have had then you should think about getting tested and getting in touch with who could be the father do hope this helps. good luck
can you become pregnant with the same symptoms as having your period? . my last cycle was august 4. i have had cycle like symptoms{headache nausea breast tenderness mood swings} but no period. i am sexually active. for the past two weeks have been feeling very nauseous but no vomiting. i bled on september 16 but only for an hour. since then the nausea has worsened and sometimes i can barely stand.