I had my period less than a week before having sex. ending sometime between thursday and saturday. The following Wednesday, I was hanging out with a guy who I had been talking to and things got intense. We had unprotected sex, but i made him stop way before he was done because I started to freak out, unplanned and unprotected isn't something I do. He did not ejaculate inside me or at all. But I know you can still become pregnant from precum. The next day, about 12 hours later he went with me to get plan B one step. A few days later on sunday I found out i have strep and mono, On monday, I started feeling nauseated. I didn't know if the meds for the strep or the mono could be causing me the nausea or could i be pregnant. Now it's wednesday (6 days after plan B and 7 days after sex) and I just saw a light pink colored blood when I went to the bathroom. Is this something normal? is this from Plan B, or am I Pregnant? I'm freaking out because I tend to over think and I'm really scared.