my boyfriend had a vasectomy 10 years ago. I was suppose to start my period friday and didnt so monday I started but it was light brown and only appeared on the tampon. Three days now of the light brown and a little light pnk/red discharge but again only on the tampon. I can go hours with out wearing one and when I wipe it is clear. Called doctor and she said nothing to worry about. Has any one had this happen to them?