Hello!, i was already past 1 week and 4 days after my expected period, i did the pregnancy test on the first week of delayed period and it was negative, i did another one on the 12th day and still, it came back negative. my lower abdomen feels really full, i don t have any back aches, don t feel the frequent urination, NO morning sickness, nausea, extreme sensitivity to smell/odor. am i pregnant? or is it only a late menstruation, i also started taking vitamin c to induce my period yesterday and had a 3000mg dosage in my first day.