no period, yet I have noitced a little spoting.

Hi I havent had my period yet I have noitced a little spoting. I was having intercourse with my boy friend and noitce on his shirt a brownish red discharge on it and it had an oder. Im not swollen or on any pills should i be worried

I noticed that it haved change the discharge does not smell it comes and goes its not alot though in small amounts, more when im going number 2 ....its more brown then browish red when it comes out. I havent had any signs of infections. Its been going on for four days today ( the first day i was spoting pink and red, from so on its been brownish red and brown) in seven days i should be getting my period. when should I take a prenancy test? and i noticed that i bearly get any sleep I go to sleep at 12 and wake up at 5 to 630.