My boyfriend and and i had un protected sex for about only a minute before putting on a condom with spermicide on it. about a week and a half ago i got a thick white discharge. I've had similair before. My period was due today. It hasn't come yet. I took a clearblue test 4 days ago and it came out negative. But yesterday i had a light brownish discharge so i thought that might be the start of it. What is your opinion