Had A Partial Hysterectomy. Had Swelling In My Abdomen. Severely Depressed, Overweight. Have Suicide Tendency. Treatment?

I had a partial hysterectomy when i was 40 years old. I noticed imediatetley the swelling in my abdomen that has never went away yet and has became tremendously worse over time. I am now 48 years old severely depressed and very overweight and it's all in my midsection of the belly. I told my last therapist a few years ago that after I lost my father and only baby brother within one year of each other. My father passed at 65 from kidney failure and my only brother died exactly a year later on easter from a tragic tractor accident. I saw his blood smeared on the ground. She told me that I was bi polar and put me on seroquel. The sleep is great, but the depression is very unbearable. I want to come off of seroquel due to weight gain and the side effects i've read about. My husband said that I just looked miserable. My face is very puffy. The belly weight is to awful to even look in the mirror. I am very confused about what to do. Seroquel if for psychosis and I don't feel psychotic anymore because it has been over 4 years since my brother died. I am having severe depression with thoughts of suicide. Please help. I want to discontinue seroquel because of all the side effects but the sleep is so good. I want to know what is my best option. I just want my joy back, good sleep without seroquel and get this ugly fat off of my midsection