In April 12 me and my boyfriend tried having sex (unprotected) I didn't think much bc he would only insert penis in me for a little bit. He had not ejeculated recently. The last time he ejaculated was on April 5. He inserted it twice for a little bit because it hurt to much. On may 3 I got my regular period on the day it was suppose to come. On may 15. I got a test and it came back negative. It is may 25 but I have lower back pains and my boobs hurt when I touch them. I'm suppose to get my period on June 3-4. What are the chances of me being pregnant?