So I started on birth control at age 15 for severe PMS. No sign of endometriosis, although my sister has it. I'm 27 now and have been off the birth control since March. My periods have still remained regular even without the birth control. I was suppose to start my period last Sunday and still haven't. Last Sunday I did have some strange pain in my lower abdomen that I've never felt before on my right side. Kind of sharp but came & went quick. I'm currently a week & a day late. I have taken 3 pregnancy tests, one 3 days late & two yesterday. But all 3 were negative 😔I've never been late before and I haven't had any symptoms of a period coming. Can I still be pregnant? I'm beginning to get discouraged