My husband and I have been trying to have a baby I usually start on the 15 or the 18th of ever month this month(sept) I started on the seventh it was a strange color almost like an orange, but not that light. My husband and I had sex on the tenth and I immediately stopped bleeding the next day and I haven't bleed sense then its very unnormal for me to only bleed for 3 to 4 days because my periods are always at least 7 days long, could this be a sign of pregnancy?