I am 21 years old and weigh 108 and I am 5'2". I have been having cramps in my pelvic area and lower back pain along with slimy, yellow color discharge with some blood in it. Sometimes my discharge does have a strong odor to it. It is very discomforting and I am a little nasuated as well. I have had a pelvic ultrasound and nothing was founf and I had a culture taken and nothing showed up.