Brown discharge before and after period ? scared.

I had sex with my boyfriend on October 3rd.  At that time I have been on birth control for over a month; however, he did not use a condom, but pulled out. ( I know,not very effective) Anyways, I was due to get my period on Sunday, October 11th, but I started getting brown discharge on the 9th,  I did get my real period on sunday, and it was normal but after my period had ended I started getting the brown discharge again.  Ive only been on birth control for two months, so I was thinking maybe its from that?  Im extremely stressed out over this!!  Any help anyone could give me would be greatly appreciated!!  Thanks!

[gillianl]

Brown discharge is old blood which most women get before and just after a period is finishing, it is nothing to worry about and i really don't think you are pregnant.

[aman383]

I am trying to conceive and today (5/5) is the second day of my missed period. i am  getting dark brown very light vaginal discharge, not enough for panty liner also. I feel bloated and very moody which usually i am not. I have no back pain or stomach pain which is also very common before my every periods. I am confused now whether it is implantation bleeding or what it is? Am i pregnant or not? Or when can i do my preg test. I did the test on 4/28 which turned out negative. Please  help me, i am really worried. thanks