i had sex on the 3rd of Mar and two days later had pink spotting two days in a row.That second day of spotting i had sex,but iat didn't show up til later.then after the two days of spotting i started on the 7th of Mar. I thought i was pregnant for sure, because i thought i had sex on the right days,but i guess not. so what i'm asking has anyone had this before. %-)