DAE feel sad when their partner says no to sex?

So hold up before you call me an AH. My partner was on ATT, meaning very harsh antibiotics for 6 months because of Tuberculosis. And what we didn’t know was that it significantly reduces libido. Since him (21M) and me(20F) are still students, we live in separate hostels. So every once or twice a month used to go for night outs and dates. Which means we could only “do the nasty” maximum 2 days a month. So I would always expect us to go crazy also coz it hadn’t even beeb an year of us dating. But it would just be me coming onto him and him mostly getting uncomfortable and telling me to stop. So in the start I wouldnt think much of it, would stop, no reaction. We would do it twice in the whole time at max and we would leave. But after a while I started feeling like he wasn’t interested in me or that I made him uncomfortable. I felt frustrated and sad and stopped asking him to go out or even initiate anything. It was after he came back to normal that we realised it was all because of medicines (not making it up, read it on the internet). Now I feel bad that I got so insecure to lure him into uncomfortable conversations where neither of us knew it was no ones fault.