I was having mild cramps along with bloating and a headache

Today I came out to my mother that I was sexually active. I had sex on October 1st and the 6th both protected. I'm scared that I might have a infection because I been itching down there and outside of my vagina it was swollen. I don't believe its a Yeast infection either. I'm having light brown discharge. On Monday 10/14 I was having mild cramps along with bloating and a headache. Today I'm kinda feeling the same. My period is suppose to come on Saturday but my nerves are so tore up about if I'm pregnant. I want to get on birth control because I don't wanna have anymore problems. But I'm kinda ruling out that I'm pregnant because I haven't seen any spotting or my boobs are tender. When people say "brown" discharge it means old blood. My mom has gotten me an appointment for the gynecologist. But I'm still having some worst fears on this. She isn't mad at me or anything but still. I regret it alot. Thanks for all your help