 [ Symptoms ] i have a question about what happened to my dad he died on 117 from a gangrene infection  he had colon cancer stage ivwith a small tumor in the intestine no blockage and several metastases on his liver he had been taking chemo with avastin we took him to the hospital because he had shortness of breath turned out he had fluid in his lungs and abdomen how did the gangrene occur does the fluid block circulation and why did not the hospital notice a severe infection like that how does a person who had no wounds get gangrene and why they would just let him languish [ Disease ] yes you may be at risk having same sex anal intercourse without a condom puts you at risk if your partner has hiv unless you saw his negative test results and knew the test results of all of his past partners and yours then you only have his word hiv can enter the body through micro tears in the genital and anal area ejaculation is not relevant you will need to be tested re tested and re tested again