Hello doctor. I am 22 years old. I had Protected sex 21 days ago, and at that time my period was supposed to come after 3 days, but my period did not come. I took the test today in the morning and it was a clear negative, i am NOT having any symptoms of pregnancy like morning sickness etc, but i tend to sleep alot more than usual. My periods are late sometimes, to a maximum of 4 days, but i have never missed a period like this before. I have had weird vaginal dicharge twice in these 21 days, like once i felt like i am having a period, but when i checked, it was discharge rather than blood. Can i be pregnant?