Okay so i havent gotten my period this month. I am never irregular. I am not on B.C and i did have sex with my boyfriend. We used a condom but we are not sure. Rght around when i was supposed to get my period i had a real bad pain on my left side by my pelvic. It felt like a lil ball was in me and it hurt when i moved. then the pain went away in 3 days but i started with brwn spotting and discharge for like 3 days then one day i had one glob of blood. Then it all stopped. n not i am 2 weeks late i took a prgnancy test from walgreens and it came out negative. Does anyone know what this can be?