Kristians' funeral expenses

My son, Kristian Marshall, commited suicide on August 2nd. His mother and I are divorced. Even with help from the funeral home and family the expenses are going to run around 5 thousand dollars, and I don't think that even covers a head stone. 
I live with my fiance and her daughter and am the only income in the household due to medical conditions. I don't really know what I should type about this. I am not a person that asks for help, I am the one people come to for help. I just don't know .