Am I just being sensitive or?

My fiancé sometimes has trouble staying hard. Only for intercourse. He can always stay hard for oral. He won’t see a doctor. Today we tried to have intercourse and he couldn’t get hard, when I said I wouldn’t blow him this time then he jacked himself off to get hard to pound me for a minute and then it seems he pre ejaculated. He always makes excuses and says it because he’s tired or this time he said he was worried about knocking the coffee over (we had sex on the couch and we had moved the coffee table away from us) so I know it’s excuses. I do think he has low testosterone or something medical going on. I still literally can’t help but to take it personal sometimes and asked “are you bored with me? Do you need a different girl?” And he said “I don’t think that’s why.” His response really bothered me. Why wasn’t his response “of course not” you know? Lol. Am I being sensitive? He said nothing to reassure me.

But he did finally agree to see a doctor... but I feel he’s just saying that to make me happy for the moment. Since I’ve been telling him to for 2 years now.

** he did use to have a porn addiction 2 years ago but he says he has stopped and I believe he has at least not addicted anymore