My period was due on the 11th and me and my boyfriend have been having unprotcted sex for about a year and a half but he always pulls out. Im not stupid. I know I can still get pregnant and theres a very good chance. Anyway a few days before my period I woke up and felt so sick a threw up twice and thought I had the flu. It went away the next day and ive just had little bursts of nausea for the past week or so. Now its the 15th and still no sign of my period. I dont want to take a pregnancy test until im pos. That my period isnt coming. Ive wasted so many in the past just for negatives. What are my chances of getting a positive this month?!?