negative pregnancy test missed period and brown discarge..what does this mean?

my boyfriend and i have been having sex for a year now. he uses condoms and i dont use any kind of protection. well i haven't technically had my period. instead it was kinda brownish and it looked a little like blood but it looked mostly brown. i took a pregnancy test just in case and it came back negative.  i dont know what tis means. i have been getting sick lately but i usually never get sick. i think i should take another pregnancy test but i dont know how long after you've had sex should you wait to take the pregnancy test. does this mean i'm pregnant? is it an infection? i'm scared :(  
help please!!!!

[snagglepuss1]

could be you are pregnant but it is too early to get a positive yet, try waiting another week or so and test again, if still no af then maybe get a blood test to confirm either way, hope you get the result you are looking for!

[CLeigh1]

im kinda in the same boat as you.... i had an implanon removed on sept 14 had dark brown period for 3 days(no red). I havent started my period yet today is 32 days scary, i took a pregnancy test 5 days ago and it was negative...you could possibly be pregnant if i was you i would wait till a week after your missed period and try again but  i would schedule a doctor appt. going to the doctor and gettin a blood test or a ultrasound could be your answer...thats im doing! hope i can help keep intouch

[sunpreet]

I am 19 years old girl...I missed my periods last month, and this month i had blood clot( dark brown or black colour) , ....it happened only 2 days....no blood till now..what could be the reason????????please reply me soon....i m tensed..