Is HIV Transmission Possible Upon Having Intercourse For A Short Span?

Hey there, So this question might not make sence at first but it ll add up once I explain everything. I ve struggled with a meth addiction for about half a year now. I currently moved in with a roommate who also is a frequent meth user. She invited a guy over and we all ended up using together. They ended up having sex. My roommate is HIV positive, and the guy she was with is not. They have been seeing each other for a few months to my understanding. After they had finished he had shifted his interest towards me. My roommate had okay d it with him before hand. At first I said no, and continued to do so, despite his relentless peer pressure, that is until the drug had kicked in. I finally gave in and we ended up sleeping together. At first I made him wear a condom, until he had asked me if I was ok with him taking it off. He had informed me that he had been tested and the test came up negative. Usually I would ve said no, but i was not sober at the time. We only had sex for a short minute untiI I got paranoid and pushed him off me. have not slept together since that day. So my question is, is there a possibility he could ve passed the virus on to me? It s been eating at me and I m terrified, I know the only way to truly know is to go get tested, but I need something to ease my mind until I am able to do so. So I guess I m wondering if it s a what s done is done, it s too late for me situation.