Am I pregnant

We have been trying ttc since Christmas for our 2nd baby . I was due my period yesterday 25 /1/14 but 3 days earlier I had a small brownish discharge and the next day a very faint blood spot and nothing since .  I feel bloated ( not constipated ) and normally I have very definite menstrual cramping . I was thinking about holding off taking an at home pregnancy test until the end of the week if my period does not come