Ok so I have had sex, but I have always used protection. Now I just recently started the pill and studies say that women have missed a period while on the pill, but I only looked that information up because I have been having symptoms normally related to pregnancy. I have been very nauseous for about one and a half month now, my lower back has been killing me, I've had bladder issues and bowel issues, and my breasts are very tender. I am due for my period soon, but am currently experiencing brown spotting and not my normal premenstrual symptoms. Is it possible that I am pregnant?