Bloody, dark stool, severe abdominal pain

I'm 18 year old girl who has been dealing with gastro issues for at least a two years now. I recently got diagnosed with depression.. Which I take medicine for everyday. It is very hard to deal with considering I already have IBS, acid reflux, and gastritis. The past two months I have lost 10 pounds unexplainable. I have had bloody dark stool going on now for a month now.. I keep having severe abdominal pain come and go. I take bentyl for pain. I seem to be getting no where I want a solution.. It is really severe right now. My nausea is horrible, fatigue, severe abdominal pain, dark black bloody stool. Etc symptoms too. I am very afraid to tell anyone how much pain I'm in just because In the past going to the hospital it's always stressful to me and my family..it's effecting my school, and just about my everyday life, on top of that my depression does NOT help.. I'm in pain and just sleep constantly cause of anti-depressants and pain medicine. What should I do?