Help

I am 16 yr old gay. I had receptive anal sex and the guy took off the condom and finished then immediately left. He was older about 19. I have not had any hiv symptoms until a few days ago the lymph nodes in my beck have become swollen and tender and no other symptoms. I have no way to go to a doctor or clinic and have no way to afford an at home test. I am panicking. I have no idea what to do. It has junpstarted my depression again rlly bad and my anxiety has sky rocketed. Idk what to do