I had gotten off my period on 11/10 i also had intercourse that day....on 11/20 i noticed that there was pinkish blood when i wiped....i have cramps and my breast are tender....now i started bleeding a bit more but still lighter than my normal period...i feel drained and i have had a headache off and on for about a week.....i took a pregnancy test on the 20th and it came up negative.