Body Odor

i have been living with Body Odor since 7th grade and I am now a sophomore in college. It has been extremely stressful and i don't know how to fix it... I have gone to a doctor before because of it and she ran both a blood test and a fecal test but nothing substantial came back. My Body Odor can be smelled across the room. It has recently gotten worse too. Some describe it as smelling like ass and other describe it as smelling like sh$$. I have had someone dump me because i smell and i don't have a lot of friends because of it. I am so scared that I am going to die alone because of this... If someone could please help me...