I got 🍇 and now I don’t know who the father of my baby is

Long story short I got graped on oct 31 by a co worker and now I don’t know who the father of my baby is. Before that me and my boyfriend have been having sex. Found out I was pregnant on the 13th. After oct 31 I haven’t had sex with my boyfriend bc I feel disgusting. Prenatal paternity test cost $1,500. I don’t have that kind of money. I’m scared to tell anyone because I feel disgusted and dirty and I think that’s how my boyfriend will see me. I don’t know what to do… I don’t want to get an abortion if it’s my boyfriend’s baby but if it’s the grapest disgusting seed I will abort it. I can’t afford the test… I might have to just abort… the baby and honestly myself. I feel disgusting. Lost. Betrayed. Confused.