Why Am I Having Pink Discharge?

ok, my name is michelle im 26 years old, i kinda think im pregnant, i have misscarried once before and all my syptoms are there, i noticed today i have light pink when i wipe, and lite pink in the urine or it looks like. i would have concieved on july 11th and its been 18 days. where do i go just wait and see. more my question was.. was about the pink urnin and pink blood. thanks Michelle