Hi, I m 18 years young and week ago I had tonsilitis, and I guess I had frost-bitten ureter. At the beggining of this week I had lots of white discharge and cramps, I started taking Amoxil because of my tonsilitis and the discharge turned dark brown with reddish color if I clean it. Also, to avoid cramps I used no-spa. And also, two weeks ago I had closer relationship with my boyfriend, but nothing went wrong, but to be safe I took pregnancy test and It was negative. My period should be next week, I hope I m not pregnant, and what could it be?