I got a yeast infection about a week ago and it lasted for about four days. I took equate 7 day treatment. I was suppose to get my period two days ago, but I haven't yet. When I started taking the medicine I noticed a little bit of blood, but not enough to be my period. Was it the start of my period but now it's delayed because of the medication? Can the medicine do that? i've had cramps the past few days too. i'm getting nervous that my period is late and just want to see if the medicine could have caused this.