You were delayed for 5 days then the next day you got your period which lasted only for 1 day then after that just pinkish brown spot is it a sign of pregnancy?
It may be a sign that you are expecting but i believe that you should get it checked out first because just jumping to conclusions could cause alot of problems if you are in an relationship or even if it was only a one night stand. can you imagine losing your boyfriend because he didnt want a baby then finding out that you werent? it would be hell. check it out first.