I haven't had a period since February 5.I have had some early symptoms of pregnancy but when I went to the doctor for a urine test on April 29th and it came back negative.Before then,and the day before on the 28 I did have unprotected sex with no form of BC.Not even withdrawal.I linked the first two missed periods with stress because of the negative urine test.However as of May 5 I noticed brown discharge when I went to the bathroom.It has stopped as of today the 7th.Im thinkin now it is possible that I could really be pregnant as of now being that this wasn't a real period.Could it have been inplantation bleeding?I'm unsure of what I should do or how long I should wait before I go to the doctor.